a conceited foolish person; a fop
If he is only a chattering coxcomb, he will not occupy much of my time or thoughts — Jane Austen
the comb of a domestic fowl
a jester's cap, decorated with a red crest
Thou must needs wear my coxcomb — Shakespeare
humorous the head; the pate
That slate descended on the bald coxcomb of Sir Vindex Brindlecombe — Charles Kingsley
coxcombry noun
[Middle English cokkes comb cock's comb]