(1):

(n.) The top of a thing; the head; a crest.

(2):

(n.) A conical or conical-ended mass of coiled thread, yarn, or roving, wound upon a spindle, etc.

(3):

(n.) A tube or quill upon which silk is wound.

(4):

(n.) Same as Merlon.

(5):

(n.) A policeman.