A hired man, especially in the western United States, who tends cattle and performs many of his duties on horseback. Also called cowman, cowpoke, cowpuncher; also called regionally buckaroo, vaquero, waddy2. See Regional Note at vaquero.
An adventurous hero.
Slang A reckless person, such as a driver, pilot, or manager, who ignores potential risks.
[kou-muh
n] 