adjective
A hollow space in the wall concealed a secret passage
Dust gathers in the hollow places of the floor
I'm feeling hollow and should prefer to eat now, not later
Politicians campaigning for office often make hollow promises they do not intend to keep
Winning the lawsuit was a hollow victory, for the man was bankrupt
His voice sounded hollow, as if he were speaking into a metal bowl
noun
We dug ourselves in a hollow in the ground hoping not to be seen. The dog herded the sheep into the hollow near the stream
verb
Huskies hollow out places for themselves to sleep in the snow
US