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| any of the bones of the wrist. |
| the basinlike cavity in the lower part of the trunk of many vertebrates, formed in humans by the innominate bones, sacrum, etc. |
clonic spasm n.
Alternate involuntary contraction and relaxation of a muscle.
spasm (spāz'əm)
n.
A sudden involuntary contraction of a muscle or group of muscles.
A muscle spasm.