Meaning of “burnt-out” - Learner’s Dictionary

burnt-out

adjective uk us /ˌbɜːntˈaʊt/ (also burned-out, uk /bɜːndˈaʊt/ us )
OBJECT

A burnt-out car or building has been almost completely destroyed by fire.

PERSON informal

tired and without enthusiasm because you have worked too hard:

a burnt-out teacher

(Definition of “burnt-out” from the Cambridge Learner’s Dictionary © Cambridge University Press)