twirl (n.)
- backflow
- backwash
- backwater
- centrifuge
- cirrus
- coil
- convolution
- corkscrew
- countercurrent
- crinkle
- curl
- curlicue
- eddy
- gulf
- gyre
- helix
- kink
- maelstrom
- meander
- pirouette
- purl
- reel
- reflux
- regurgitation
- revolution
- ringlet
- roll
- round
- scallop
- screw
- scroll
- snake
- spin
- spinning
- spiral
- surge
- swirl
- tendril
- turn
- turning
- twine
- twist
- volute
- volution
- vortex
- wheel
- whirl
- whirligig
- whirling
- whirlpool
- whirlwind
- whorl
- wind
- winding
- worm
- wring
