Bible Dictionaries
Air Pump

Webster's Dictionary

(1):

A kind of pump for exhausting air from a vessel or closed space; also, a pump to condense air or force it into a closed space.

(2):

A pump used to exhaust from a condenser the condensed steam, the water used for condensing, and any commingled air.

Bibliography Information
Webster, Noah. Entry for 'Air Pump'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/air-pump.html. 1828.