Back, bak, n. the hinder part of the body in man, and the upper part in beasts, extending from the neck and shoulders to the extremity of the backbone: put for the whole body in speaking of clothes: the hinder part, or the part opposite to the front side: the convex part of a book, opposite to the opening of the leaves: the thick edge of a knife or the like: the upright hind part of a chair: the surface of the sea, or of a river: the keel and keelson of a ship: (football) one of the players stationed behind the 'forwards,' the full back's duty being merely to guard the goal: (mining) that side of an inclined mineral lode which is nearest the surface of the ground—the back of a level is the ground between it and the level above.—adv. to the place from which one came: to a former state or condition: behind: behind in time: in return: again.—v.t. to get upon the back of: to help, as if standing at one's back: to force back: to support one's opinion by a wager or bet—'to back a horse,' to bet money on his winning in a race, 'to back the field,' to bet upon all the horses in a field, against one in particular: to countersign a warrant, or indorse a cheque or bill; to write or print at the back of, as a parliamentary bill, or the like: to put or propel backward, or in the opposite direction, by reversing the action, as of an engine or a boat—hence the phrases, To back the oars, To back water.—v.i. to move or go back.—n. Back′-band, a broad strap or chain passing over the cart saddle, and serving to keep up the shafts of a vehicle.—v.t. Back′bite, to speak evil of any one behind his back or in his absence.—ns. Back′biter; Back′biting; Back′-board, a board placed at the back of a cart, boat, &c.: a board fastened across the back to straighten the figure; Back′bond (Scots law), a deed attaching a qualification or condition to the terms of a conveyance or other instrument—used when particular circumstances render it necessary to express in a separate form the limitations or qualifications of a right; Back′bone, the bone of the back, the vertebral column: the main support of anything: mainstay: firmness, reliableness; Back′-door, a door in the back part of a building: (attrib.) unworthily secret: clandestine.—adj. Backed, as in humpbacked.—ns. Back′-end, the later part of a season: the late autumn; Back′er, one who backs or supports another in a contest: one who bets on a horse or the like; Back′-fall, a fall on the back in wrestling—also figuratively: a lever in the coupler of an organ; Back′friend (obs.), a pretended friend: a backer, a friend who stands at one's back; Back′ground, ground at the back: a place of obscurity: the space behind the principal figures of a picture; Back′-hair, the long hair at the back of a woman's head; Back′-hand, the hand turned backwards in making a stroke: handwriting with the letters sloped backwards.—adj. Back′-hand′ed, with the hand turned backward (as of a blow): indirect.—ns. Back′-hand′er, a blow with the back of the hand: an extra glass of wine out of turn, the bottle being passed back; Back′ing, support at the back: mounting of a horse: the action of putting back: a body of helpers: anything used to form a back or line the back; Back′ing-down, shirking; Back′-lash, the jarring reaction of a wheel in a machine when the motion is not uniform; Back′-log, a log at the back of a fire.—adj. Back′most, farthest to the back.—ns. Back′-piece, Back′-plate, a piece or plate of armour for the back; Back′-set, a setting back, reverse: an eddy or counter-current; Back′side, the back or hinder side or part of anything: the hinder part of an animal; Back′-sight, in surveying, a sight taken backwards: the sight of a rifle nearer the stock; Back′-slang, slang in which every word is pronounced backwards.—v.t. Backslide′, to slide or fall back in faith or morals:—pa.p. backslid′, or backslid′den.—ns. Backslid′er; Backslid′ing.—n.pl. Back′stairs, back or private stairs of a house.—adj. secret or underhand.—n.pl. Back′stays, ropes or stays extending from the topmast-heads to the sides of a ship, and slanting a little backward, to second the shrouds in supporting the mast when strained by a weight of sail in a fresh wind: any stay or support at the back.—ns. Back′stitch, a method of sewing in which, for every new stitch, the needle enters behind, and comes out in front of, the end of the previous one; Back′sword, a sword with a back or with only one edge: a stick with a basket-handle; Backsword′man (Shak.); Back′-wash, a backward current.—v.t. to affect with back-wash: to clean the oil from wool after combing.—n. Back′water, water held back in a mill-stream or river by the obstruction of a dam below—a pool or belt of water connected with a river, but not in the line of its course or current: water thrown back by the turning of a water-wheel: a backward current of water: the swell of the sea formed by the paddles of a steamship.—n.pl. Back′woods, the forest or uncultivated part of a country beyond the cleared country, as in North American Backwoods′man.—Back! go back, turn back (imperatively).—At the back of (in U.S. often Back of), in support or pursuit; On, Upon the back of, weighing down as a burden.—To and back (Shak.), forward and backward.—To back down, to abandon one's opinion or position; To back out, to recede from an engagement or promise; To back up, to give support to; To be on one's back, to have come to the end of one's resources; To break the back of, to overburden, to complete the hardest part of a task; To cast behind the back (B.), to forgive; To set or put up the back, to arouse to resentment; To the backbone, thoroughly. [A.S. bæc, Sw. bak, Dan. bag.]

Backare, Baccare, bak′āre, interj. (Shak.) back! stand back! [Perh. for back there!]

Backet, bak′et (Scot.), n. a shallow wooden trough for carrying ashes, coals, &c. [Fr. baquet, dim. of bac, back.]

Backgammon, bak-gam′un, n. a game played by two persons on a board with dice and fifteen men or pieces each. [M.E. gamen, play; and named from the fact that the pieces are sometimes taken up and obliged to go back—that is, re-enter at the table. Always called Tables till the 17th century.]

Backsheesh, Backshish, bak′shēsh, n. a gift or present of money in the East, a gratuity or tip. [Pers.]

Backward, bak′ward, adv. towards the back: on the back: towards the past: from a better to a worse state: in a direction opposite to the normal—also Back′wards.—adj. Back′ward, keeping back: unwilling: slow: late: dull or stupid.—n. the past portion of time.—n. Back′wardation, percentage paid by a seller of stock for keeping back its delivery till the following account.—adv. Back′wardly.—n. Back′wardness.—Backward and forward, to and fro.—To ring bells backward, to ring them, beginning with the bass bell, in order to give tidings of dismay. [Back, and affix Ward, Wards, in the direction of.]

Bacon, bā′kn, n. swine's flesh salted or pickled and dried: (Shak.) a rustic, 'chaw-bacon.'—To save or sell one's bacon, i.e. one's own flesh or body. [O. Fr. bacon, of Teut. origin; cf. Old High Ger. bahho, bacho; Ger. bache.]

Baconian, bak-ōn′i-an, adj. pertaining to Lord Bacon (1561-1626), or to his philosophy, which was inductive or based on experience.

Bacterium, bak-tē′ri-um, n., Bacteria, bak-tē′ri-a, n.pl. Schizomycetes, extremely small, single-celled, fungoid plants, single or grouped, reproducing rapidly by cross division or by the formation of spores, almost always associated with the decomposition of albuminoid substances, and regarded as the germs or active cause of many diseases.—ns. Bacteriol′ogist; Bacteriol′ogy, the scientific study of bacteria. [Gr. baktērion, dim. of baktron, stick, staff.]

Baculine, bak′ū-līn, adj. pertaining to the stick or cane—in flogging. [L. baculum.]