# blackhead

> English word · Noun · IPA /ˈblæk.hɛd/ · frequency rank #85,042

## Definitions
1. 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.
2. A form of histomoniasis in poultry, characterized by cyanotic discoloration on the bird's head.
3. A scaup: any of various ducks of the genus Aythya.

## Etymology
From black + head.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/blackhead