pantaloon

noun

1. pantaloons, a man’s close-fitting garment for the hips and legs, worn especially in the 19th century, but varying in form from period to period; trousers.
2. (usually initial capital letter) Also Pan·ta·lo·ne [pan-tl-oh-ney, pahn-; Italian pahn-tah-law-ne] /ˌpæn tlˈoʊ neɪ, ˌpɑn-; Italian ˌpɑn tɑˈlɔ nɛ/. (in commedia dell’arte) a foolish old Venetian merchant, usually the head of a household, generally lascivious and frequently deceived in the course of lovers’ intrigues.
3. (in the modern pantomime) a foolish, vicious old man, the butt and accomplice of the clown.

noun theatre

1. (in pantomime) an absurd old man, the butt of the clown’s tricks
2. (usually capital) (in commedia dell’arte) a lecherous old merchant dressed in pantaloons

n.skinny, foolish old man in Italian comedy, 1580s; see pantaloons. As a kind of leggings, 1660s.