noun (n)

• a hired hand who tends cattle and performs other duties on horseback(noun.person)

  Synonym:
  cattleman, cowhand, cowherd, cowman, cowpoke, cowpuncher, puncher
  

  source: wordnet30
• a performer who gives exhibitions of riding and roping and bulldogging(noun.person)

  Synonym:
  rodeo rider
  

  source: wordnet30
• someone who is reckless or irresponsible (especially in driving vehicles)(noun.person)

  source: wordnet30
• A cattle herder; a drover; specifically, one of an adventurous class of herders and drovers on the plains of the Western and Southwestern United States.(noun)

  source: webster1913