the GNU version of the Collaborative International Dictionary of English
n. One who has charge of cattle, horses, etc.; a herdsman; a cowboy.
The Century Dictionary and Cyclopedia
n. A herdsman.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. local names for a cowboy (`vaquero' is used especially in southwestern and central Texas and `buckaroo' is used especially in California)
Word Usage
"Buckaroos, a corruption of the Spanish word vaquero, follow many of the Old California traditions, braiding their own bridles and hackamores, and throwing long ropes that give them more room to slow a calf without hurting their horse."