goat Definition

goat
noun

1. Any of numerous species of herbivorous mammal, noted for its physical agility and sure-footedness. The males have tufty beards on their lower jaws. Domesticated goats are kept for their milk and meat. See also billy goat, nanny goat, kid¹ noun 2, caprine.
2. derog, colloq
A man, especially an old one, who makes unwanted sexual advances to women.
3. derog, colloq
A foolish person.
4. The constellation and sign of the zodiac Capricorn.

Form: the Goat

Idiom: get someone's goat

colloq
To annoy or irritate them.

Etymology: Anglo-Saxon gat.