noun, plural plains·men.
Examples from the Web for plainsman
"I guess you have the makings of a plainsman," he said, with a smile, as he patted me on the head.Vanguards of the Plains|Margaret McCarter
They wanted to see a real scout and plainsman in the saddle.
I was glad to be a plainsman once more, and took a lively interest in everything that went forward.
This noted scout and author, known to every plainsman, has lived a life of stirring adventure.Dorothy's House Party|Evelyn Raymond
Well, they had him at last—dead; and the plainsman shuddered, as he turned away.Keith of the Border|Randall Parrish