Meaning of “OD” in the English Dictionary

"OD" in English

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ODverb [ I ]

uk /ˌəʊˈdiː/ us /ˌoʊˈdiː/ present tense OD's, present participle OD'ing, past tense and past participle OD'd

slang to take an overdose (= too much) of a drug:

She OD'd on heroin and died.

informal humorous to have too much of something, often food:

No more for me, thanks. I think I OD'd on chocolate cake.
noun [ C ] uk us plural OD's mainly US slang

(Definition of “OD” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)