Merriam-Webster's Collegiate® Dictionary, 11th Edition
CHOP
I. verb (chopped; chopping) see: chap
Date: 14th century
transitive verb
1. to cut into or sever usually by repeated blows of a sharp instrument, to cut into pieces, to weed and thin out (young cotton), to cut as if by chopping , to strike (as a ball) with a short quick downward stroke, to subject to the action of a chopper , intransitive verb to make a quick stroke or repeated strokes with or as if with a sharp instrument (as an ax), to move or act suddenly or violently,
II. noun
Date: 14th century
1. a forceful usually slanting blow with or as if with an ax or cleaver, a sharp downward blow or stroke, a small cut of meat often including part of a rib, a mark made by or as if by chopping, material that has been chopped up,
5. a short abrupt motion (as of a wave), a stretch of choppy sea, chopper 6, ax 3 ,
III. intransitive verb (chopped; chopping)
Etymology: Middle English chappen, choppen to barter
Date: 1540
to change direction, to veer with or as if with wind,
IV. noun
Etymology: Hindi chāp & Urdu chhāp stamp
Date: 1614
1. a seal or official stamp or its impression, a license validated by a seal,
2. a mark on goods or coins to indicate nature or quality, a kind, brand, or lot of goods bearing the same chop, quality , grade