Real Dictionary

cramp
uncountable noun: Cramp is a sudden strong pain caused by a muscle suddenly contracting. You sometimes get cramp in a muscle after you have been making a physical effort over a long period of time.

cramp in American English 1
a sudden, painful, involuntary contraction of a muscle or muscles from chill, strain, etc.
to cause a cramp or cramps in
noun: a sudden, involuntary, spasmodic contraction of a muscle or group of muscles, esp. of the extremities, sometimes with severe pain

cramp in American English 2
a metal bar bent to form a right angle at each end, for holding together blocks of stone, timbers, etc.
cramped
to fasten with or as with a cramp
noun
transitive verb: to fasten or hold with a cramp

cramp in British English 1
noun: a painful involuntary contraction of a muscle, typically caused by overexertion, heat, or chill
verb: to affect with or as if with a cramp

cramp in British English 2
to secure or hold with a cramp
noun: a strip of metal with its ends bent at right angles, used to bind masonry