OD          
verb [ I ] uk/ˌəʊˈdiː/ us/ˌoʊˈdiː/  OD's | OD'ing | OD'd
 slang过量服用(药物) 
to take an overdose (= a dangerously large amount) of a drug
  She OD'd on heroin and died. 她过量服用海洛因而死。 
  informal humorous吃(食物)太多 
to have too much of something, often food
  No more for me, thanks. I think I OD'd on chocolate cake. 谢谢,我不要了。我想我巧克力蛋糕吃多了。