From The Collaborative International Dictionary of English v.0.44 [gcide]:
orgasm \or"gasm\ ([^o]r"g[a^]z'm), noun [F. orgasme; cf. Gr. 'orgasmo's a kneading, softening, prob. confused with 'orga^n to swell, especially with lust; to feel an ardent desire.] (Physiol.) Eager or immoderate excitement or action; the state of turgescence of any organ; erethism.
2. Especially: The peak of the physical pleasurable sexual excitement caused by stimulation of the sexual organs, as in intercourse; in the male, it is usually accompanied by ejaculation. [1913 Webster +PJC]
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
81 Moby Thesaurus words for "orgasm": abandon, access, act of love, adultery, aphrodisia, apoplexy, ass, attack, balling, carnal knowledge, climax, cohabitation, coition, coitus, coitus interruptus, commerce, congress, connection, convulsion, copula, copulation, coupling, cramp, craze, delirium, diddling, eclampsia, ecstasy, epilepsy, epitasis, falling sickness, fire and fury, fit, fornication, frenzy, furor, furore, fury, grip, hysteria, ictus, intercourse, intimacy, intoxication, lovemaking, madness, making it with, marital relations, marriage act, mating, meat, onanism, orgy, ovum, pareunia, paroxysm, passion, procreation, rage, rapture, ravishment, relations, screwing, seizure, sex, sex act, sexual climax, sexual commerce, sexual congress, sexual intercourse, sexual relations, sexual union, sleeping with, spasm, sperm, stroke, tearing passion, throes, towering rage, transport, venery
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