From Longman Dictionary of Contemporary Englishcowboycow‧boy /ˈkaʊbɔɪ/ ●●○ noun [countable] 1 BOTAin the US, a man who rides a horse and whose job is to care for cattle2 DISHONEST British English someone who is dishonest in business, or who produces very bad quality work a firm of cowboy builders3 → cowboys and Indians
Examples from the Corpus
cowboy• He'd been working as a cowboy on a Utah ranch.• A cowboy crooner sings softly on one side of the room.• A cowboy does his work 100 miles from anybody.• He took off his wellingtons and put on his cowboy boots.• I used to take out my gun and play cowboys in the dark.• In the land of the cowboy you might expect beef to be an unfailingly popular dish.• The cowboys loved me, ha ha!From Longman Business Dictionarycowboycow‧boy /ˈkaʊbɔɪ/ noun [countable] British English informal someone who is dishonest in business or does bad quality work, usually because they want to make money quickly