Cop (?), n. [AS. cop; cf. G. kopf head. Cf. Cup, Cob.]
1.
The top of a thing; the head; a crest.
[Obs.]
Cop they used to call
The tops of many hills.
Draton.
2.
A conical or conical-ended mass of coiled thread, yarn, or roving, wound upon a spindle, etc.
3.
A tube or quill upon which silk is wound.
4. Mil. Arch.
same as Merlon.
5.
A policeman.
[Slang]
Cop waste, a kind of cotton waste, composed chiefly remnants of cops from which the greater part of the yarn has been unwound.
© Webster 1913.