curl
curled,
verb
1.
2.
3.
4.
noun
5. Sports. A weightlifting exercise using one or two hands, in which a barbell held at the thigh or to the side of the body is raised to the chest or shoulder and then lowered without moving the upper arms, shoulders, or back.
6. Any of various plant diseases in which the leaves roll up.
curl up
To assume a position with the legs drawn up: The child curled up in an armchair to read.
[Middle English crullen, curlen, from crulle, curly, perhaps of Middle Low German origin.]