· a cavity or space in something; "hunger had caused the hollows in their cheeks"

Hypernym(s): cavity, enclosed_space

· a small valley between mountains; "he built himself a cabin in a hollow high up in the Appalachians"

Synonym(s): holler

Hypernym(s): valley, vale

· a depression hollowed out of solid matter

Synonym(s): hole

Hypernym(s): natural_depression, depression

· remove the inner part or the core of; "the mining company wants to excavate the hillside"

Synonym(s): excavate, dig

Hypernym(s): remove, take, take_away, withdraw

· remove the interior of; "hollow out a tree trunk"

Synonym(s): hollow_out, core_out

Hypernym(s): empty

· 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"

Antonym(s): solid

· as if echoing in a hollow space; "the hollow sound of footsteps in the empty ballroom"

· devoid of significance or force; "empty promises"; "a hollow victory"; "vacuous comments"

Synonym(s): empty, vacuous

· lacking in substance or character; "a hollow person"