Synonyms for Cramp (same or very similar meaning)
WordNet sense 1 (a painful and involuntary muscular contraction):
spasm, muscle spasmWordNet sense 2 (a strip of metal with ends bent at right angles; used to hold masonry together):
cramp ironWordNet sense 3 (prevent the progress or free movement of):
halter, hamper, strangle, halterFrom the ODE community, based on WordNetadd/edit