fiend /fiːnd/ noun [countableC] 1 BAD PERSONa very cruel, evil, or violent person 残暴的人,恶人,恶魔般的人 Both of them were fighting like fiends. 两人在恶斗。
a sex/rape fiend (=one who commits very unpleasant sex attacks) 色魔
3. drug/dope/cocaine etc fiend someone who takes a lot of illegal drugs 瘾君子