D defs.my
Entry 2 senses Webster, 1913

buckaroo

· IPA /ˌbʌkəˈɹu/
01 n. a cowboy, especially used of one who breaks broncos; -- used especially in California.
  1. 1.
    a cowboy, especially used of one who breaks broncos; -- used especially in California.
  2. 2.
    a fellow; a guy.[slang]
Syn. vaquero.