From Wiktionary, the free dictionary
Literally, “the drop of water that makes the vase overflow”.
- IPA(key): /la ɡut d‿o ki fɛ de.bɔʁ.de l(ə) vaz/
la goutte d’eau qui fait déborder le vase f (uncountable)
- (idiomatic, singular only) the straw that broke the camel's back
