simple past tense and past participle of curl up

(transitive, of hair) to curl, make curly, shape into curls / (intransitive) to become curly / (transitive) to coil or shrivel, make into a coil / (intransitive) to become coiled or shriveled

(sports) crunch (exercise)

present participle of curl up

Third-person singular simple present indicative form of curl up

plural of curl-up