hollow definition

1. a cavity or space in something
• examples: hunger had caused the hollows in their cheeks
2. a small valley between mountains
• examples: he built himself a cabin in a hollow high up in the Appalachians
3. remove the interior of
• examples: hollow out a tree trunk
4. not solid; having a space or gap or cavity
• examples: a hollow wall
• examples: a hollow tree
• examples: hollow cheeks
• examples: his face became gaunter and more hollow with each year
5. as if echoing in a hollow space
• examples: the hollow sound of footsteps in the empty ballroom