JMdict: 1003960

くるくる

1. [adv,adv-to,vs] whirling; revolving; spinning; going round and round
2. [adv,adv-to,vs] coiling around; winding around; rolling around
3. [adv,adv-to,vs] working tirelessly; working hard
4. [adv,adv-to,vs] constantly changing

Words often seen with this one: (experimental feature)

巻 (14), ぐる (10)