cramp up

cramp up

v.
1. To suffer muscle cramps: I cramped up while swimming today.
2. To cause someone or something to suffer muscle cramps: That lousy meal cramped me up.
3. To squeeze something tightly into a restrictive space or position: There are too many subjects cramped up together under the same heading. I was cramped up in the back seat of a compact car for hours.
See also: cramp, up