vacuum

(noun) the absence of matter. Synonyms: vacuity.

(noun) an empty area or space. Synonyms: void, vacancy, emptiness. Examples: "The huge desert voids." "The emptiness of outer space." "Without their support he'll be ruling in a vacuum."

(noun) a region that is devoid of matter. Synonyms: vacuity.

(noun) an electrical home appliance that cleans by suction. Synonyms: vacuum cleaner.

(verb) clean with a vacuum cleaner. Synonyms: vacuum-clean, hoover. Example: "Vacuum the carpets."