Devoid of content; containing nothing or nobody; vacant. (adjective)
Containing no elements (as of a string or array), opposed to being null (having no valid value). (adjective)
To make empty; to void; to remove the contents of. (verb)
A bottle previously containing some liquid, especially a drink, and that is now empty. (noun)
Examples of word empty
An empty box on the stage is not described to an audience as empty, but is handled and moved about in the same way that any empty box would be treated -- though a tremulous bunny just might be hanging, unnoticed, behind it.
Instances of the word are not frequent, possibly because we had another word for empty (_toom_) in common with the Danes; but perhaps there was no necessity for dwelling upon it in the sense of _empty_; it was only its application as an epithet to a _concave_ or _hollow shield_ that your question could have had in view.
An empty smoker in the Cornish express -- _empty_ except for me!
Those empty vessels of ours, hearts "endowed with inexhaustible hope," must turn away from the grave (?) _empty still_.
When they turn down an empty glass for me, it's going to be _empty_.