#208. Depth.—N. depth; deepness &c. adj.; profundity, depression
&c. (concavity) 252.
hollow, pit, shaft, well, crater; gulf &c. 198; bowels of the earth,
bottomless pit[obs3], hell.
soundings, depth of water, water, draught, submersion; plummet, sound,
probe; sounding rod, sounding line; lead.
bathymetry.
[instrument to measure depth] sonar, side-looking sonar;
bathometer[obs3].
V. be deep &c. adj.; render deep &c. adj.; deepen.
plunge &c. 310; sound, fathom, plumb, cast the lead, heave the lead,
take soundings, make soundings; dig &c. (excavate) 252.
Adj. deep, deep seated; profound, sunk, buried; submerged &c. 310;
subaqueous, submarine, subterranean, subterraneous, subterrene[obs3];
underground.
bottomless, soundless, fathomless; unfathomed, unfathomable; abysmal;
deep as a well; bathycolpian[obs3]; benthal[obs3], benthopelagic[obs3];
downreaching[obs3], yawning.
knee deep, ankle deep.
Adv. beyond one's depth, out of one's depth; over head and ears; mark
twine, mark twain.

#209. Shallowness.—N. shallowness &c. adj.; shoals; mere scratch.
Adj. shallow, slight, superficial; skin deep, ankle deep, knee deep;
just enough to wet one's feet; shoal, shoaly[obs3].

#210. Summit.—N. summit, summity|; top, peak, vertex, apex, zenith,
pinnacle, acme, culmination, meridian, utmost height, ne plus utra, height,
pitch, maximum, climax, culminating point, crowning point, turning point;
turn of the tide, fountain head; water shed, water parting; sky, pole.
tip, tip top; crest, crow's nest, cap, truck, nib; end &c. 67; crown,
brow; head, nob[obs3], noddle[obs3], pate; capsheaf[obs3].
high places, heights.
topgallant mast, sky scraper; quarter deck, hurricane deck.
architrave, frieze, cornice, coping stone, zoophorus[obs3], capital,
epistyle[obs3], sconce, pediment, entablature[obs3]; tympanum; ceiling &c.
(covering) 223.
attic, loft, garret, house top, upper story.
[metaphorical use] summit conference, summit; peak of achievement,
peak of performance; peaks and troughs, peaks and valleys [in graphs].
V. culminate, crown, top; overtop &c. (be superior to) 33.
Adj. highest &c. (high &c. 206); top; top most, upper most; tiptop;
culminating &c. v.; meridian, meridional[obs3]; capital, head, polar,
supreme, supernal, topgallant.
Adv. atop, at the top of the tree.
Phr. en flute; fleur deau[Fr].

#211. Base.—N. base, basement; plinth, dado, wainscot; baseboard, mopboard[obs3]; bedrock, hardpan [U.S.]; foundation &c. (support) 215; substructure, substratum, ground, earth, pavement, floor, paving, flag, carped, ground floor, deck; footing, ground work, basis; hold, bilge. bottom, nadir, foot, sole, toe, hoof, keel, root; centerboard. Adj. bottom, undermost, nethermost; fundamental; founded on, based on, grounded on, built on.

#212. Verticality.—N. verticality; erectness &c. adj.;
perpendicularity &c. 216a; right angle, normal; azimuth circle.
wall, precipice, cliff.
elevation, erection; square, plumb line, plummet.
V. be vertical &c. adj.; stand up, stand on end, stand erect, stand
upright; stick up, cock up.
render vertical &c. adj.; set up, stick up, raise up, cock up; erect,
rear, raise on its legs.
Adj. vertical, upright, erect, perpendicular, plumb, normal, straight,
bolt, upright; rampant; standing up &c. v.; rectangular, orthogonal &c.
216a.
Adv. vertically &c. adj.; up, on end; up on end, right on end; a
plomb[Fr], endwise; one one's legs; at right angles.

#213. Horizontality.—N. horizontality[obs3]; flatness; level,
plane; stratum &c. 204; dead level, dead flat; level plane.
recumbency, lying down &c. v.; reclination[obs3], decumbence[obs3];
decumbency[obs3], discumbency|; proneness &c. adj.; accubation[obs3],
supination[obs3], resupination[obs3], prostration; azimuth.
plain, floor, platform, bowling green; cricket ground; croquet ground,
croquet lawn; billiard table; terrace, estrade[obs3], esplanade, parterre.
[flat land area] table land, plateau, ledge; butte; mesa (plain) 344.
[instrument to measure horizontality] level, spirit level.
V. be horizontal &c. adj.; lie, recline, couch; lie down, lie flat,
lie prostrate; sprawl, loll, sit down.
render horizontal &c. adj.; lay down, lay out; level, flatten;
prostrate, knock down, floor, fell.
Adj. horizontal, level, even, plane; flat &c. 251; flat as a billiard
table, flat as a bowling green; alluvial; calm, calm as a mill pond;
smooth, smooth as glass.
recumbent, decumbent, procumbent, accumbent[obs3]; lying &c. v.;
prone, supine, couchant, jacent[obs3], prostrate, recubant[obs3].
Adv. horizontally &c. adj.; on one's back, on all fours, on its beam
ends.

#214. Pendency.—N. pendency[obs3], dependency; suspension, hanging
&c. v.; pedicel, pedicle, peduncle; tail, train, flap, skirt, pigtail, pony
tail, pendulum; hangnail
peg, knob, button, hook, nail, stud, ring, staple, tenterhook;
fastening &c. 45; spar, horse.
V. be pendent &c. adj.; hang, depend, swing, dangle; swag;
daggle[obs3], flap, trail, flow; beetle.
suspend, hang, sling, hook up, hitch, fasten to, append.
Adj. pendent, pendulous; pensile; hanging &c. v.; beetling, jutting
over, overhanging, projecting; dependent; suspended &c. v.; loose, flowing.
having a peduncle &c. n.; pedunculate[obs3], tailed, caudate.

#215. Support.—N. support, ground, foundation, base, basis; terra firma; bearing, fulcrum, bait [U.S.], caudex crib[obs3]; point d'appui[Fr], <gr/pou sto/gr>[Grk][Grk], purchase footing, hold, locus standi[Lat]; landing place, landing stage; stage, platform; block; rest, resting place; groundwork, substratum, riprap, sustentation, subvention; floor &c. (basement) 211. supporter; aid &c. 707; prop, stand, anvil, fulciment|; cue rest, jigger; monkey; stay, shore, skid, rib, truss, bandage; sleeper; stirrup, stilts, shoe, sole, heel, splint, lap, bar, rod, boom, sprit[obs3], outrigger; ratlings[obs3]. staff, stick, crutch, alpenstock, baton, staddle[obs3]; bourdon[obs3], cowlstaff[obs3], lathi[obs3], mahlstick[obs3]. post, pillar, shaft, thill[obs3], column, pilaster; pediment, pedicle; pedestal; plinth, shank, leg, socle[obs3], zocle[obs3]; buttress, jamb, mullion, abutment; baluster, banister, stanchion; balustrade; headstone; upright; door post, jamb, door jamb. frame, framework; scaffold, skeleton, beam, rafter, girder, lintel, joist, travis[obs3], trave[obs3], corner stone, summer, transom; rung, round, step, sill; angle rafter, hip rafter; cantilever, modillion[obs3]; crown post, king post; vertebra. columella[obs3], backbone; keystone; axle, axletree; axis; arch, mainstay. trunnion, pivot, rowlock[obs3]; peg &c. (pendency) 214[obs3]; tiebeam &c. (fastening) 45; thole pin[obs3]. board, ledge, shelf, hob, bracket, trevet[obs3], trivet, arbor, rack; mantel, mantle piece[Fr], mantleshelf[obs3]; slab, console; counter, dresser; flange, corbel; table, trestle; shoulder; perch; horse; easel, desk; clotheshorse, hatrack; retable; teapoy[obs3]. seat, throne, dais; divan, musnud[obs3]; chair, bench, form, stool, sofa, settee, stall; arm chair, easy chair, elbow chair, rocking chair; couch, fauteuil[Fr], woolsack[obs3], ottoman, settle, squab, bench; aparejo[obs3], faldstool[obs3], horn; long chair, long sleeve chair, morris chair; lamba chauki[obs3], lamba kursi[obs3]; saddle, pannel[obs3], pillion; side saddle, pack saddle; pommel. bed, berth, pallet, tester, crib, cot, hammock, shakedown, trucklebed[obs3], cradle, litter, stretcher, bedstead; four poster, French bed, bunk, kip, palang[obs3]; bedding, bichhona, mattress, paillasse[obs3]; pillow, bolster; mat, rug, cushion. footstool, hassock; tabouret[obs3]; tripod, monopod. Atlas, Persides, Atlantes[obs3], Caryatides, Hercules. V. be supported &c.; lie on, sit on, recline on, lean on, loll on, rest on, stand on, step on, repose on, abut on, bear on, be based on &c.; have at one's back; bestride, bestraddle[obs3]. support, bear, carry, hold, sustain, shoulder; hold up, back up, bolster up, shore up; uphold, upbear[obs3]; prop; under prop, under pin, under set; riprap; bandage &c. 43. give support, furnish support, afford support, supply support, lend support, give foundations, furnish foundations, afford foundations, supply foundations, lend foundations; bottom, found, base, ground, imbed, embed. maintain, keep on foot; aid &c. 707. Adj. supporting, supported &c. v.; fundamental; dorsigerous[obs3]. Adv. astride on, straddle.

#216. Parallelism.—N. {ant. 216a} parallelism; coextension[obs3];
equidistance[obs3]; similarity &c. 17.
Adj. parallel; coextensive; equidistant.
Adv. alongside &c. (laterally) 236.

#216a. Perpendicularity—N. {ant. 216} perpendicularity,
orthogonality; verticality, &c. 212.
V. be perpendicular, be orthogonal; intersect at right angles, be
rectangular, be at right angles to, intersect at 90 degrees; have no
correlation.
Adj. orthogonal, perpendicular; rectangular; uncorrelated.