Top Definition
a bathroom or toliet.
does anyone have to use the hydrant?

excuse me a second, i've gotta use the hydrant.
by Jesse Colburn March 29, 2008
3 more definitions
Large Penis
Your not going to stick that Hydrant in me, it would split me wide open.
by Avienn September 10, 2009
a person who attracts the (often unwanted) attention of dogs.

see fire hydrant.
"he's always flirting with girls he wouldn't date in a million years."

"yeah, he's a total hydrant"
by hammond swiss March 20, 2005
A large butt plug, so named because it resembles a fire hydrant in size.
Baby loves her hydrant more than she loves me.
by Col. Dr. April 23, 2006

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