noun

1. (usually plural) A container, especially a bottle, whose contents have been used up, leaving it empty.

   “Put the empties out to be recycled.”

verb

1. To make empty; to void; to remove the contents of.

   “The cinema emptied quickly after the end of the film.”

2. Of a river, duct, etc: to drain or flow toward an ultimate destination.

   “Salmon River empties on the W shore about 2 miles below Bear River.”

adjective

1. Devoid of content; containing nothing or nobody; vacant.

   “an empty purse; an empty jug; an empty stomach”

2. Containing no elements (as of a string, array, or set), opposed to being null (having no valid value).

3. Free; clear; devoid; often with of.

Synonyms: clean, clear, leer, toom, unoccupied