tenesmus painful spasm of the anal sphincter along with an urgent desire to defecate without the significant production of feces; associated with irritable bowel syndrome
Verb
cramp -
secure with a cramp; "cramp the wood"
fasten,
secure,
fix attach to; "They fastened various nicknames to each other"
cramp -
suffer from sudden painful contraction of a muscle
affect act physically on; have an effect upon; "the medicine affects my heart rate"
cramp -
prevent the progress or free movement of; "He was hampered in his efforts by the bad weather"; "the imperialist nation wanted to strangle the free trade between the two small countries"
cramp -
To restrain to a specific physical position, as if with a cramp.
Wikipedia
Cramps are unpleasant, often painful sensations caused by muscle contraction or overshortening. The common causes of skeletal muscle cramps are muscle fatigue and a sodium imbalance. Smooth muscle cramps may be due to menstruation or Gastroenteritis.
OmegaWiki Dictionary
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cramp A painful and involuntary muscular contraction.