Swirl
Swirl , verb, transitive and intransitive
[Akin to Norw. svirla to whirl, freq. of sverra to whirl, Danish svirre, German schwirren to whiz, to buzz. r177. See Swarm, n.]
To whirl, or cause to whirl, as in an eddy.
The river swirled along.
Swirl , noun
A whirling motion; an eddy, as of water; a whirl.
The silent swirl of bats.