Related to Charliehorse:charley horse char·ley horse (chär′lē) n.Informal A cramp or stiffness in a muscle, especially of the upper leg, caused by injury or excessive exertion. [Originally baseball slang, of unknown origin.] American Heritage® Dictionary of the English Language, Fifth ...
A charlie horse is a name given to severe muscle cramps in the legs or feet. The cramp often feels as if the muscles of the legs or feet spasm and then lock up in excruciating pain. Charlie horse cramps can occur anytime, but some people are more prone to get them at night. The m...