lost >> lɒst
Definition: [verb] past and past participle of lose.
Definition: [adjective] unable to find one's way; not knowing one's whereabouts.
Example: Help! We're lost!
Definition: [adjective] that has been taken away or cannot be recovered.
Example: if only one could recapture one's lost youth
Definition: [adjective] (of a game or contest) in which a defeat has been sustained.
Example: the lost election of 1979