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English definition of “OD”

OD

verb [I]     /ˌəʊˈdiː/ US  /ˌoʊ-/ (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.Drugs - general wordsSpecific types of drug informal humorous to have too much of something, often food: Nothing more for me, thanks. I think I OD'd on chocolate cake.Too much and unnecessary OD     noun [C] (plural OD's) mainly US slang
(Definition of OD verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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