To clean one's teeth, especially by using a toothbrush and toothpaste.
To clean (something) with a vacuum cleaner.
To optimise a database or database table by physically removing deleted tuples.
To use a vacuum cleaner.
The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, such as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.
An emptiness in life created by a loss of a person who was close, or of an occupation.
A vacuum cleaner.
An exercise in which one draws their abdomen towards the spine.
A region of space that contains no matter.
A spacetime having tensors of zero magnitude.