Here are a couple of common American cowboy terms.
Cowboy Makins: Nary a cowboy would be caught without his “makins”, the cigarette paper and tobacco used to roll his own cigarettes.
Night Hawk: While cowboys slept under the stars on a drive, one unlucky soul who drew the short straw, the “night hawk”, had to stay up all night and circle the cattle to guard against predators and keep an eye out for things that might cause a stampede. A “Night Wrangler” kept an eye on the horses.