the cap, resembling a cock's, comb, formerly worn by professional fools.
3.
a garden plant, Celosia cristata, of the amaranth family, with flowers, commonly crimson or purple, in a broad spike somewhat resembling the comb of a cock.
4.
any of several other species of the genus Celosia.
5.
an elongate prickleback, Anoplarchus purpurescens, living among submerged rocks along the Pacific coast of North America.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a gadget; dingus; thingumbob.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an amaranthaceous garden or pot plant, Celosia cristata, with yellow, crimson, or purple feathery plumelike flowers in a broad spike resembling the comb of a cock
c.1400, "comb or crest of a cock," from possessive of cock + comb. Meaning "cap worn by a professional fool" is from 1560s; hence "conceited fool" (1560s), a sense passing into the derivative coxcomb.