chines is a form of:

Chine



ENGLISH MEANING
noun
1.
A chink or cleft; a narrow and deep ravine; as, Shanklin Chine in the Isle of Wight, a quarter of a mile long and 230 feet deep.
2.
The backbone or spine of an animal; the back.
3.
A piece of the backbone of an animal, with the adjoining parts, cut for cooking.
4.
The edge or rim of a cask, etc., formed by the projecting ends of the staves; the chamfered end of a stave.
verb
1.
(TRANSITIVE) To cut through the backbone of; to cut into chine pieces.
2.
(TRANSITIVE) Too chamfer the ends of a stave and form the chine..