whitehead
noun
Definitions
A pimple formed by a clogged sebaceous gland, usually with a milky-white cap.
Example: 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.
A species of passerine bird, endemic to New Zealand (Mohoua albicilla)
The blue-winged snow goose, Anser caerulescens caerulescens.
The surf scoter duck.