Yes, curl is a Scrabble word!

Verb

1. Form a curl, curve, or kink

2. Shape one's body into a curl

3. Wind around something in coils or loops

4. Twist or roll into coils or ringlets

5. Play the Scottish game of curling

Noun

1. A round shape formed by a series of concentric circles (as formed by leaves or flower petals)

2. American chemist who with Richard Smalley and Harold Kroto discovered fullerenes and opened a new branch of chemistry (born in 1933)

3. A strand or cluster of hair