Definition of "get lost"

(colloquial, dismissal, impolite) Used to rudely tell somebody to go away or leave one alone.  examples

(intransitive) To lose one's way.  examples

(intransitive, of an object) To go missing; to be in a location unknown to someone who is looking for it.  examples

(intransitive) To be absent, to seem to be absent.  examples

(intransitive, usually in imperative and reported speech, idiomatic) To exit from the scene.  examples