What is "revenuers"

Usage examples of "revenuers".

Father tried to make a go of it at a couple businesses and then started running 'shine and when he got collared by revenuers he killed himself.

One time I caught a bootlegger who had just bought some roots against revenuers and was keeping them at his still and was seriously cast down when they failed to work.

My grandfather was the sheriff of Medicine Creek back then, and one night he and a couple of revenuers caught King Lavender down near the Kraus place, loading a jack mule with clearwater moonshine—old man Kraus had a still in the back of his tourist cave in those days.

Not to mention that he'd assume they were revenuers out to find his still.