What does the word surf mean?

Usage examples for surf

  1. " But I can swim, papa," said Max; " and won't you let me go with you out beyond the surf, where the water is more quiet?" – Elsie at Nantucket by Martha Finley
  2. Wheel, came back; and the next minute he was beside Tom Fillot and Joe Dance, who were trying to steady the vessel as she rode on through the surf. – The Black Bar by George Manville Fenn
  3. The negro lost his footing, and I my balance, and down we plunged into the surf. – Journal of an African Cruiser by Horatio Bridge