Ab-

[ Latin prep., etymologically the same as E. of, off. See Of. ] A prefix in many words of Latin origin. It signifies from, away , separating, or departure, as in abduct, abstract, abscond. See A-(6). [ 1913 Webster ]

‖n. [ The native name. ] The Manila-hemp plant (Musa textilis); also, its fiber. See Manila hemp under Manila. [ 1913 Webster ]

v. t. [ LL. abacinatus, p. p. of abacinare; ab off + bacinus a basin. ] To blind by a red-hot metal plate held before the eyes. [ R. ] [ 1913 Webster ]

n. The act of abacinating. [ R. ] [ 1913 Webster ]

‖n. [ Gr. 'abaki`skos, dim of 'a`bax. See Abacus. ] (Arch.) One of the tiles or squares of a tessellated pavement; an abaculus. [ 1913 Webster ]

n. [ LL abacista, fr. abacus. ] One who uses an abacus in casting accounts; a calculator. [ 1913 Webster ]

n. An abacus. [ Obs. ] B. Jonson. [ 1913 Webster ]

adv. [ Pref. a- + back; AS. on bæc at, on, or toward the back. See Back. ] 1. Toward the back or rear; backward. “Therewith aback she started.” Chaucer. [ 1913 Webster ]

2. Behind; in the rear. Knolles. [ 1913 Webster ]

3. (Naut.) Backward against the mast; -- said of the sails when pressed by the wind. Totten. [ 1913 Webster ]

To be taken aback. (a) To be driven backward against the mast; -- said of the sails, also of the ship when the sails are thus driven. (b) To be suddenly checked, baffled, or discomfited. Dickens. [ 1913 Webster ]