Convulsion - Definition
convulsion
n 1: a sudden uncontrollable attack; "a paroxysm of giggling";
"a fit of coughing"; "convulsions of laughter" [syn:
paroxysm, fit, convulsion]
2: violent uncontrollable contractions of muscles
3: a violent disturbance; "the convulsions of the stock market"
[syn: convulsion, turmoil, upheaval]
4: a physical disturbance such as an earthquake or upheaval