Meanings
-
1
noun
a wave whose crest has broken into white foam
Strong winds covered the river with whitecaps before the storm reached shore.
-
2
noun
any of several birds distinguished by a white patch or crown on the head
A whitecap perched briefly on the low branch beside the trail.
-
3
noun
US historical: a member of a self-appointed vigilante group, often one whose members wore white hoods or masks
The newspaper condemned the whitecaps who had terrorized local families.
Thesaurus
Etymology
A compound of white + cap. The wave and bird senses refer to a white crest resembling a cap. The historical American vigilante sense refers to the white head coverings worn by some such groups.