Hydraulics

[Sarah]

That branch of science, or of engineering, which treats offluids in motion, especially of water, its action in rivers andcanals, the works and machinery for conducting or raising it, its useas a prime mover, and the like.

[Sarah]

a system added to a car which can raise or lower a car on command.

[Sarah]

A euphemistic term used to describe the male genitals or parts thereof. Coined by a DJ known as The Greaseman to avoid being fined by the FCC for offensive language.

[Sonia]

([Addendum] to an existing word)
Slang term for the penis -- in limited use, originated on the [syndicated] [Greaseman] radio show in Washington DC.