hollow

Adjective

• devoid of significance or point
  • empty promises
    
  • a hollow victory
    
  • vacuous comments
    

• as if echoing in a hollow space
  • the hollow sound of footsteps in the empty ballroom
    

• not solid; having a space or gap or cavity
  • a hollow wall
    
  • a hollow tree
    
  • hollow cheeks
    
  • his face became gaunter and more hollow with each year
    

Noun

• a depression hollowed out of solid matter

• a small valley between mountains
  • he built himself a cabin in a hollow high up in the Appalachians
    

• a cavity or space in something
  • hunger had caused the hollows in their cheeks
    

Verb

• remove the interior of
  • hollow out a tree trunk
    

• remove the inner part or the core of
  • the mining company wants to excavate the hillside
    

Related words

• Synonyms: 
  empty , vacuous , hole , holler , hollow out , core out , excavate , dig