(亦作kef)
mass noun
a substance, especially cannabis, smoked to produce a drowsy state
麻醉品（尤指大麻）。
S. African informal very good (used as a general term of approval)
〈南非, 非正式〉好极了（用作一般的赞许）：
that T-shirt's kif.
这件T恤棒极了。
词源
early 19th cent.: from Arabic kayf 'enjoyment, well-being'.