1. absence of matter.
2. A space empty of matter.
3. A space relatively empty of matter.
4. A space in which the pressure is significantly lower than atmospheric pressure.
5. A state of emptiness; a void.
6. A state of being sealed off from external or environmental influences; isolation.
7. A vacuum cleaner.
8. of, relating to, or used to create a vacuum.
9. containing air or other gas at a reduced pressure.
10. operating by means of suction or by maintaining a partial vacuum.
11. to clean with or use a vacuum cleaner.

1. A region of space that contains no matter.
2. A vacuum cleaner.
3. to clean (something) with a vacuum cleaner.
4. to use a vacuum cleaner.

1. A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means.
2. the condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc..

1. empty space; space void of matter: opposed to plenum; in practical use, an inclosed space from which the air (or other gas) has been very nearly removed, as by an air-pump.

1. the absence of matter
2. clean with a vacuum cleaner
3. a region that is devoid of matter
4. an electrical home appliance that cleans by suction
5. an empty area or space