blackhead

A type of comedo, a skin blemish, a type of acne vulgaris, where a pore becomes clogged with a dark, hard, cheesy keratin-filled substance forming a hard black "head" on the skin's surface.

See there! A son is born And we pronounce him fit to fight There are blackheads on his shoulders And he pees himself in the night.

Wallace sees a cluster of tiny blackheads at the corner of his nose.

A form of histomoniasis in poultry, characterized by cyanotic discoloration on the bird's head.

A scaup: any of various ducks of the genus Aythya.