Definify.com
Webster 1913 Edition
Blackhead
Black′headˊ
,Noun.
(Zool.)
The scaup duck.
Definition 2024
blackhead
blackhead
English
Noun
blackhead (plural blackheads)
- (medicine) A 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.
- A form of histomoniasis in poultry, characterized by cyanotic discoloration on the bird's head.
- A scaup: a kind of duck.
Translations
skin blemish
External links
- blackhead on Wikipedia.Wikipedia
- Blackhead in the 1920 edition of Encyclopedia Americana.