aspirator

n. instrument which removes air; instrument which removes fluid

An aspirator, also called an ejector or filter pump, is a device that produces vacuum by means of the Venturi effect. In an aspirator, fluid (liquid or gaseous) flows through a tube which then narrows. When the tube narrows, the fluid's speed increases, and because of the Venturi effect, its pressure decreases. Vacuum is taken from this point.
See more at Wikipedia.org...

As·pi·ra·tor n. An apparatus for removing fluid from a body cavity, consisting usually of a hollow needle and a cannula, connected by tubing to a [more]Aspirator - Community and Resources

Noun
1. a pump that draws air or another gas through a liquid
(hypernym) pump
(derivation) aspirate

n. aspirator, instrument which removes fluid