noun. A device for removing liquids or gases by suction, especially an instrument that uses suction to remove substances, such as mucus or serum, from a body cavity.

noun. A suction pump used to create a partial vacuum.

noun. An apparatus for creating a vacuum by the action of a moving fluid.

noun. A surgical instrument, consisting of a hollow needle, or trocar, connected with a suction-syringe, used in removing fluids from the cavities of the body.

noun. A form of winnowing-machine employing aspiration instead of a blast. See aspiration, 6.

noun. An apparatus for passing air or gases through or over certain liquids or solids, or for exhausting a closed vessel, by means of suction.

noun. An instrument for the evacuation of the fluid contents of tumors or collections of blood.

noun. A pump which draws gas through a liquid.

noun. A pump for removing gases or liquids.

noun. a pump that draws air or another gas through a liquid

"They used a tube, called an aspirator, that is about 30 inches long with a screen separation part way up the tube."