·add. ·- A machine for cleaning carpets, tapestry, upholstered work, ·etc., by suction.
·noun One who, or that which, cleans. ...
Webster's Dictionary of the English Language
·noun The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vess...
A space utterly empty, even of air or vapour. ...
The Sailor's Word-Book