whitecap

/ˈwaɪtˌkæp/
noun
  1. A wave with a foamy white top, usually caused by wind.
    • Surfers love the whitecaps because they mean good waves.
    • Whitecaps appeared on the ocean as the storm approached.
    • The boat rocked as whitecaps formed on the lake.
Synonyms
What does "whitecap" mean? | whatsthatwordmean | whatsthatwordmean