"cowboy" in the noun sense
1. cowboy, cowpuncher, puncher, cowman, cattleman, cowpoke, cowhand, cowherd
a hired hand who tends cattle and performs other duties on horseback
2. cowboy, rodeo rider
a performer who gives exhibitions of riding and roping and bulldogging
3. cowboy
someone who is reckless or irresponsible (especially in driving vehicles)
Source: WordNet® (An amazing lexical database of English)
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