/kab'euhl yair"oh, kab'euh lair"oh/ ; Sp. /kah'vah lye"rddaw, -ye"-/ , n. , pl. caballeros /kab'euhl yair"ohz, kab'euh lair"ohz/ ; Sp. /kah'vah lye"rddaws, -ye"-/ .
1. a Spanish gentleman.
2. Southwestern U.S.
a. a horseman.
b. a woman's escort or admirer; cavalier.
[ 1740-50; caballarius groom; see CAVALIER ]