orgasm

Short definition from Wiktionary

Noun

1. 1
   A spasm or sudden contraction.
2. 2
   A rush of sexual excitement; now specifically, the climax or peak of sexual pleasure, which occurs during sexual activity and which in males may include ejaculation and in females vaginal contractions.
3. 3
   A creamy white alcoholic cocktail containing amaretto, Irish cream, and coffee liqueur.

Verb

1. 1
   To have an orgasm.