Green’s Dictionary of Slang

(US tramp) a farmer.

1902

Times (Shreveport, LA) 12 May 3/5: He is ever under the watchful eye of his ‘jocker’ [...] to see that no harm comes to him and ‘pipe’ the ‘bulls’ and ‘fly mugs’ (police and others) when a ‘Hank Kelly’ (a farmer) ‘floats’ around.