godan verb (-ru), intransitive verb
be wrapped up; cover oneself
Describes a person or animal wrapping themselves snugly in something like a blanket or futon, often for warmth or comfort.
寒いので毛布にくるまった。
I wrapped myself in a blanket because it was cold.
猫がこたつ布団にくるまっている
The cat is curled up inside the kotatsu quilt.