Definition of "whitehead" in English

noun

1. (dermatology) A type of comedo, manifesting as a small whitish bump of the skin due to retention of sebum and dead skin cells in a skin pore blocked by a thin layer of epithelium.

   • Ruth knew that the whiteheads of her teenage acne were a temporary state of affairs, but that did nothing to quell her distress when an eruption hit just before prom.

2. A species of passerine bird, endemic to New Zealand (Mohoua albicilla).

3. The blue-winged snow goose, Anser caerulescens caerulescens.

4. The surf scoter duck.

5. A domestic pigeon of a particular breed; a white-tailed monk.