a person who rides horseback through the countryside US, 1942.
2
a motorcyle gang member US, 1989
saddle tramp
1. slang A cowboy, particularly one who lives a nomadic lifestyle. Primarily heard in US. You can't trust him—he's just a saddle tramp who roams from town to town!
2. slang One who rides on horseback. Primarily heard in US. A: "I hear hoofbeats." B: "Yes, there's a saddle tramp approaching in the distance."