vacuum in WordNet English dictionary

1. an empty area or space
   "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"
   void  vacancy  emptiness  vacuum 
   
2. a region that is devoid of matter
   vacuum  vacuity 
   
3. the absence of matter
   vacuum  vacuity 
   
4. an electrical home appliance that cleans by suction
   vacuum  vacuum cleaner 
   

1. clean with a vacuum cleaner
   "vacuum the carpets"
   vacuum  vacuum-clean  hoover