cirrus
coil
corkscrew
curl
curlicue
evolute
gyre
involute
kink
ringlet
roll
screw
scroll
spiral
swirl
tendril
twirl
twist
volute
volution
vortex
whirl
whorl
ear
helices
mollusk genus
helicopter
left-handed
right-handed
armature
bobbin
cut-off
electro-magnet
electromagnets
galvanometer
magnet
Felix