A heroin dealer.

Hostlers used to be people who sold and took care of horses, and "horse" is a common slang word for heroin.
Guy 1: Ey who is your hostler?
Guy 2: It's just my shady cousin
by Brxtjn July 16, 2022
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most often referring to a mouth or just something lood to call somebody
1.)" Bitch shut ur fucking cock hostler before I fuck start ur face"
2.) " Man I hate that Steve dude he is such a cock hostler"
by Brando April 12, 2004
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