opium
n. 鸦片；起麻木作用的事物，精神鸦片；麻醉剂
例句
He was forced to take opium to kill the pain.
他被迫服用鸦片止痛。
《柯林斯英汉双解大词典》
They use opium as a sedative, rather than as a narcotic.
他们把鸦片作为镇静剂，而不是作为麻醉剂。
The use of opium was not criminalized until fairly recently.
直到最近抽鸦片才被判定为非法。
《牛津词典》
