Real Dictionary

swash in American English
a body of swift, dashing water; specif., a channel cutting through or behind a sandbank
to dash, strike, wash, etc. with a splashing sound; splash
to splash (a liquid), as in a container
adjective: noting or pertaining to a character having a swash
intransitive verb: to splash, as things in water, or as water does
noun: the surging or dashing, sometimes violent, of water, waves, etc
transitive verb: to dash or cast violently, esp. to dash (water or other liquid) around, down, etc

swash in British English
noun: the dashing movement or sound of water, such as that of waves on a beach
verb: (esp of water or things in water) to wash or move with noisy splashing