Webster’s Revised Unabridged Dictionary · 1913
Cop
Cop (kŏp), 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. Drayton.
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 of remnants of cops from which the greater part of the yarn has been unwound.