(hwīt′kap′) noun
1. A foam-crested wave.
2. One of several birds having white about the head.

(hwīt′kap′) noun
Formerly, in the Middle West and southward, one of a lawless, secret organization of men, who, under the pretense of regulating public morals, imposed lynch-law rule upon individuals who incurred their ill will: so named from their white caps or hoods.