Definitions
1.verbTo go in the reverse direction."the train backed into the station; the horse refuses to back"
2.verbTo support."I back you all the way; which horse are you backing in this race?"
3.verb(of the wind) To change direction contrary to the normal pattern; that is, to shift anticlockwise in the northern hemisphere, or clockwise in the southern hemisphere.
4.verb(of a square sail) To brace the yards so that the wind presses on the front of the sail, to slow the ship.
5.verb(of an anchor) To lay out a second, smaller anchor to provide additional holding power.
6.verb(of a hunting dog) To stand still behind another dog which has pointed.
7.verbTo push or force backwards."The mugger backed her into a corner and demanded her wallet."
8.verbTo get upon the back of; to mount.
9.verbTo place or seat upon the back.
10.verbTo make a back for; to furnish with a back."to back books"
11.verbTo adjoin behind; to be at the back of.
12.verbTo write upon the back of, possibly as an endorsement."to back a letter; to back a note or legal document"
13.verb(of a justice of the peace) To sign or endorse (a warrant, issued in another county, to apprehend an offender).
14.verbTo row backward with (oars)."to back the oars"