—adj. 1. containing nothing; having none of the usual or appropriate contents: an empty bottle. 2. vacant; unoccupied: an empty house. 3. without cargo or load: an empty wagon. 4. destitute of people or human activity: We walked along the empty streets of the city at night. 5. destitute of some quality or qualities; devoid (usually fol. by of): Theirs is a life now empty of happiness. 6. without force, effect, or significance; hollow; meaningless: empty compliments; empty pleasures. 7. not employed in useful activity or work; idle: empty summer days. 8. Math.(of a set) containing no elements; null; void.
9. hungry: I'm feeling rather empty —let's have lunch. 10. without knowledge or sense; frivolous; foolish: an empty head. 11. completely spent of emotion: The experience had left him with an empty heart.
—v.t. 1. to make empty; deprive of contents; discharge the contents of: to empty a bucket. 2. to discharge (contents): to empty the water out of a bucket.
—v.i. 1. to become empty: The room emptied rapidly after the lecture. 2. to discharge contents, as a river: The river empties into the sea.
—n. Informal.something that is empty, as a box, bottle, or can: Throw the empties into the waste bin.