to form (esp hair) into waves or coils
to form, adopt, or grow in (something) into a curved, twisted, or spiral shape
in weight-training, to lift (a weight) using only the hands, wrists, and forearms
said of hair: to grow in coils or spirals
to form curls or twists
to move or progress in curves or spirals
The smoke curled up into the sky
to play the game of curling
curl one's lip
to lift the corner of one's mouth in a sneer; to sneer
make one's hair curl
to horrify one
stories that would make your hair curl
[Middle English curlen, from crul curly, from early Dutch krul]