Meaning of “the final/last straw” in the English Dictionary

british dictionary

"the final/last straw" in British English

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the final/last straw

also the straw that breaks the camel's back

C1 the last in a series of unpleasant events that finally makes you feel that you cannot continue to accept a bad situation:

Losing my job was bad enough, but being evicted was the final straw.
She's always been rude to me, but it was the last straw when she started insulting my mother.

(Definition of “the final/last straw” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)