Chaps
来自Big Physics
mid 19th century: short for chaparajos.
wiktionary
From chap.
Short for American Spanish chaparreras or chaparejos. Related to chaparejos and chaparral.
etymonline
chaps (n.1)
1844, American English, short for chaparejos, from Mexican Spanish chaparreras, leather overalls worn to protect riders' legs from the chaparro (see chaparral).
chaps (n.2)
"jaws, cheeks," from chap (n.), 1550s, which is of unknown origin. Hence, chap-fallen "with the lower jaw hanging down" (1590s), hence, figuratively, "dejected, disspirited" (c. 1600).
