Fluvial, flōō′vi-al, adj. of or belonging to rivers.—n. Flu′vialist.—adjs. Fluviat′ic, Flu′viatile, belonging to or formed by rivers. [L. fluvialis—fluvius, a river, fluĕre, to flow.]
Flux, fluks, n. act of flowing: a flow of matter: quick succession: a discharge generally from a mucous membrane: matter discharged: excrement: the term given to the substances employed in the arts to assist the reduction of a metallic ore and the fusion of a metal.—v.t. to melt.—v.i. to flow.—ns. Flux′ātion, the act of flowing or passing away; Fluxibil′ity, Flux′ibleness.—adjs. Flux′ible, Flux′ide, that may be melted.—ns. Fluxil′ity; Flux′ion, a flowing or discharge: a difference or variation: (math.) the rate of change of a continuously varying quantity: (pl.) the name given after Newton to that branch of mathematics which with a different notation is known after Leibnitz as the differential and integral calculus.—adjs. Flux′ional, Flux′ionary, variable: inconstant.—n. Flux′ionist, one skilled in fluxions.—adj. Flux′ive (Shak.), flowing with tears. [O. Fr.,—L. fluxus—fluĕre, to flow.]
Fly, flī, v.i. to move through the air on wings: to move swiftly: to pass away: to flee: to burst quickly or suddenly: to flutter.—v.t. to avoid, flee from: to cause to fly, as a kite:—pr.p. fly′ing; pa.t. flew (flōō); pa.p. flown (flōn).—n. a popular name best restricted in its simplicity to the insects forming the order Diptera, but often so widely used with a prefix—e.g. butterfly, dragon-fly, May-fly—as to be virtually equivalent to insect: a fish-hook dressed with silk, &c., in imitation of a fly: a light double-seated carriage, a hackney-coach: (mech.) a flywheel: (pl.) the large space above the proscenium in a theatre, from which the scenes, &c., are controlled.—adj. wide-awake: (slang) knowing.—adjs. Fly′away, flighty; Fly′-bit′ten, marked by the bite of flies.—n. Fly′blow, the egg of a fly.—adj. Fly′blown, tainted with the eggs which produce maggots.—ns. Fly′boat, a long, narrow, swift boat used on canals; Fly′book, a case like a book for holding fishing-flies; Fly′-catch′er, a small bird, so called from its catching flies while on the wing; Fly′-fish′er, one who fishes with artificial flies as bait; Fly′-fish′ing, the art of so fishing; Fly′-flap′per, one who drives away flies with a fly-flap; Fly′ing-bridge, a kind of ferry-boat which is moved across a river by the action of the combined forces of the stream and the resistance of a long rope or chain made fast to a fixed buoy in the middle of the river; Fly′ing-butt′ress, an arch-formed prop which connects the walls of the upper and central portions of an aisled structure with the vertical buttresses of the outer walls; Fly′ing-camp, a body of troops for rapid motion from one place to another; Fly′ing-Dutch′man, a Dutch black spectral ship, whose captain is condemned for his impieties to sweep the seas around the Cape of Storms unceasingly, without ever being able to reach a haven; Fly′ing-fish, a fish which can leap from the water and sustain itself in the air for a short time, by its long pectoral fins, as if flying; Fly′ing-fox, a large frugivorous bat; Fly′ing-lē′mur, a galeopithecoid insectivore whose fore and hind limbs are connected by a fold of skin, enabling it to make flying leaps from tree to tree; Fly′ing-par′ty, a small body of soldiers, equipped for rapid movements, used to harass an enemy; Fly′ing-phalan′ger, a general popular name for the petaurists; Fly′ing-shot, a shot fired at something in motion; Fly′ing-squid, a squid having broad lateral fins by means of which it can spring high out of the water; Fly′ing-squirr′el, a name given to two genera of squirrels, which have a fold of skin between the fore and hind legs, by means of which they can take great leaps in the air; Fly′leaf, a blank leaf at the beginning and end of a book; Fly′-line, a line for angling with an artificial fly; Fly′-mak′er, one who ties artificial flies for angling; Fly′man, one who works the ropes in the flies of a theatre; Fly′pāper, a porous paper impregnated with poison for destroying flies; Fly′-pow′der, a poisonous powder used for killing flies; Fly′-rail, that part of a table which turns out to support the leaf.—adj. (Shak.) moving slow as a fly on its feet.—ns. Fly′-rod, a light flexible rod used in fly-fishing, usually in three pieces—butt, second-joint, and tip; Fly′-trap, a trap to catch flies: (bot.) the spreading dog-bane, also the Venus's fly-trap; Fly′wheel, a large wheel with a heavy rim applied to machinery to equalise the effect of the driving effort.—Fly at, to attack suddenly; Fly in the face of, to insult: to oppose; Fly open, to open suddenly or violently; Fly out, to break out in a rage; Fly the kite, to obtain money as by accommodation bills, the endorser himself having no money; Fly upon, to seize: to attack.—A fly in the ointment, some slight flaw which corrupts a thing of value (Eccles. x. i.); Break a fly on the wheel, to subject to a punishment out of all proportion to the gravity of the offence; Let fly, to attack: to throw or send off; Make the feathers fly (see Feathers). [A.S. fléogan, pa.t. fleáh; Ger. fliegen.]
Flyte, Flite, flīt, v.i. (Scot.) to scold, to brawl.—n. Flyte, Flyt′ing, a scolding, or heated dispute. [A.S. flítan, to strive; Ger. be-fleissen.]
Foal, fōl, n. the young of a mare or of a she-ass.—v.i. and v.t. to bring forth a foal.—ns. Foal′foot, colts-foot; Foal′ing, bringing forth of a foal or young. [A.S. fola; Ger. fohlen, Gr. pōlos; L. pullus.]
Foam, fōm, n. froth: the bubbles which rise on the surface of liquors: fury.—v.i. to gather foam: to be in a rage.—v.t. (B.) to throw out with rage or violence (with out).—adv. Foam′ingly.—adjs. Foam′less, without foam; Foam′y, frothy. [A.S. fám; Ger. feim, prob. akin to L. spuma.]
Fob, fob, n. a trick.—v.t. to cheat. [Prob. a corr. of O. Fr. forbe, a rogue; or Ger. foppen, to jeer.]
Fob, fob, n. a small pocket in the waistband of trousers for a watch: a chain with seals, &c., hanging from the fob. [If orig. a secret pocket, perh. connected with the above.]
Focus, fō′kus, n. (opt.) a point in which several rays meet and are collected after being reflected or refracted, while a virtual focus is a point from which rays tend after reflection or refraction—the principal focus is the focus of parallel rays after reflection or refraction: any central point:—pl. Fō′cuses, Foci (fō′sī).—v.t. to bring to a focus: to concentrate:—pa.p. fō′cussed.—adj. Fō′cal, of or belonging to a focus.—v.t. Fō′calise, to bring to a focus: to concentrate.—n. Focimeter (fō-sim′e-tėr), an instrument for assisting in focussing an object in or before a photographic camera—usually a lens of small magnifying power.—Focussing cloth, a cloth thrown over a photographic camera and the operator's head and shoulders to exclude all light save that coming through the lens.—Conjugate foci, two points so situated that if a light be placed at one, its rays will be reflected to the other; In focus, placed or adjusted so as to secure distinct vision, or a sharp, definite image. [L. focus, a hearth.]
Fodder, fod′ėr, n. food for cattle, as hay and straw.—v.t. to supply with fodder.—ns. Fodd′erer; Fodd′ering. [A.S. fódor; Ger. futter.]