Definition of "whitecap" [white•cap]

• A wave with a crest of foam. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Then under the whitecap is a gleam of silver again."
• "A whitecap foamed above it and broke across in a snow-white smother."
• "A big whitecap broke just beyond, washing over the barge and leaving the Alma half swamped."