Top Definition
A pump consisting of a screw within a cylinder. When the screw is turned, water is moved from one end to the other.

-- or --

When Archimedes has sex with his wife.

-- or --

When you yell 'eureka' upon ejaculating.

-- or --

An ancient invention that can be used in the vagina to evacuate excess menses.
In an incredibly archane reference to an ancient invention, a sexual double entendre is achieved.
by scorpionmintred November 19, 2004
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×