rot Meaning, definition in Cambridge English Dictionary
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Meaning of "rot" - English Dictionary

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rotverb [I or T]

uk   /rɒt/  us   /rɑːt/ (-tt-)
C2 to (cause something to) decay: The fruit had been left to rot on the trees. Rain has got in and rotted (away) the woodwork. the smell of rotting fruit
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rotnoun [U]

uk   /rɒt/  us   /rɑːt/
decay: Rot has got into the furniture. old-fashioned informal nonsense: Don't talk rot!
(Definition of rot from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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