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an apparatus or device employing suction.
hydraulics. a suction pump that operates by the pressure differential created by the high-speed flow of a fluid past an intake orifice.
medicine/medical. an instrument for removing body fluids by suction.
historical examples

arrange the flask with its ice casing just above the neck of the aspirator bottle.
the elements of bacteriological technique john william henry eyre

he grabbed for his aspirator, then tried to reach the airlock.
badge of infamy lester del rey

shut off the tap and make up the contents of the aspirator bottle to 10 litres again.
the elements of bacteriological technique john william henry eyre

aspirator, an instrument used to promote the flow of a gas from one vessel into another by means of a liquid.
the new gresham encyclopedia. vol. 1 part 2 various

jake and lou shoved him through the doors into the tractor and doc yanked off his aspirator.
badge of infamy lester del rey

all doubt as to the nature of a given hydatid tumor of the liver may be set at rest by the use of the aspirator.
a system of practical medicine by american authors, vol. ii various

at this rate the aspirator bottle will empty itself in just under three hours.
the elements of bacteriological technique john william henry eyre

this last flask is connected with an aspirator, by means1211 of which a current of air is drawn through the apparatus.
cooley’s practical receipts, volume ii arnold cooley

care in carrying out asepsis in tapping, which should be performed with an aspirator, need hardly be more than mentioned.
surgical experiences in south africa, 1899-1900 george henry makins

the apparatus acts thus at the same time as aspirator and compressor.
scientific american, vol. xliii.–no. 1. [new series.], july 3, 1880 various

noun
a device employing suction, such as a jet pump or one for removing fluids from a body cavity

aspirator as·pi·ra·tor (ās’pə-rā’tər)
n.
an apparatus for removing fluid from a body cavity, consisting usually of a hollow needle and a cannula, connected by tubing to a container in which a vacuum is created by a syringe or a suction pump.