too much of a drug taken or given at one time, either intentionally or by accident

When he was 17 he took an overdose of sleeping pills and nearly died. 他17岁时吃了过量的安眠药，险些丧命。

Jimi Hendrix died of a drug overdose. 杰米‧亨德里克斯死于吸毒过量。

UK also a drugs overdose 摄入过量药物

too much of something

After watching two operas, I was suffering from an overdose of culture. 看了两场歌剧之后，我现在处于文化过量状态。

to take too much of a drug

She overdosed on aspirin and died. 她服用了过量的阿司匹林致死。

to have too much of something

I think I've just overdosed on cheesecake! 我想我是奶酪蛋糕吃得太多了！