by MarySue July 29, 2008

Hydro is a better type of marijuana because you will get a more enjoyable high when smoking it. For example smoking regular weed will make you tired.
You will know that you are smoking real hydro because the ash will be pure white, not grey like shitty weed.
by b rolls July 8, 2005

Hydraulics, Hydraulic suspension, most commonly seen in older 60s/70s cars as well as some newer rides. Allows the vehicle to roll on 3 wheels, or hop.
by Jeef1 April 22, 2005

by TunerFocus February 22, 2010

Slang term for Hydromorphone - a very potent opiod painkiller that commonly is used for recreational purposes
by Xx Francis Crick Xx June 13, 2018

Canadian slang for electricity, due to the high usage of hydroelectric power and the fact that most of the electric companies have "hydro" in their names.
by cjohnson November 17, 2007
