to splash, as things in water, or as water does

Waves were swashing against the piers.

to dash around, as things in violent motion.

to swagger.

to dash or cast violently, esp. to dash (water or other liquid) around, down, etc.

the surging or dashing, sometimes violent, of water, waves, etc.

the sound made by such dashing

the thunderous swash of the waves.

the ground over which water washes.

Chiefly Southeastern U.S. a channel of water through or behind a sandbank.

Printing . an extending ornamental flourish, as on letters of certain fonts of italic or cursive type.

Printing . noting or pertaining to a character having a swash

a swash letter.

verb

bubble , burble , gurgle , lap , splash , bespatter , dash , slop , slosh , spatter , splatter , spray , flounce , peacock , prance , swagger , swank