BACK (3)

back (3). Back, v.t. to mount, second, support, put back

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Back, a. 1. 1. Being at the back or in the rear; distant; remote; as, the back door; back settlements.
2. 2. Being in arrear; overdue; as, back rent.
3. 3. Moving or operating backward; as, back action.
Back charges, charges brought forward after an account has been made up. — Back filling (Arch.), the mass of materials used in filling up the space between two walls, or between the inner and outer faces of a wall, or upon the haunches of an arch or vault. — Back pressure. (Steam Engine) See under Pressure. — Back rest, a guide attached to the slide rest of a lathe, and placed in contact with the work, to steady it in turning. — Back slang, a kind of slang in which every word is written or pronounced backwards; as, nam for man. — Back stairs, stairs in the back part of a house; private stairs. Also used adjectively. See Back stairs, Backstairs, and Backstair, in the Vocabulary. — Back step (Mil.), the retrograde movement of a man or body of men, without changing front. — Back stream, a current running against the main current of a stream; an eddy. — To take the back track, to retrace one's steps; to retreat.