trail boss(n = noun.person) - the person responsible for driving a herd of cattle;
is a kind of supervisor
boss, boss around, cattle trail, chisholm trail, condensation trail, deer trail, iditarod trail, iditarod trail dog sled race, indian trail, mountain trail, paper trail, party boss, political boss, santa fe trail, ski trail, straw boss, trail, trail bike, trail head, trail riding, trail rope, vapor trail