lap against

lap against (something)

Of water, to break, beat, or splash gently against something, as due to a current or tide. I love sleeping out on my uncle's boat at night, with the waves lapping against the hull.See also: lap

lap (up) against something

[for waves] to splash gently against something. The waves lapped up against the shore softly. The waves lapped against the side of the boat all night long, and I couldn't sleep.See also: lap