1.MDDADDICTEDsomeone who takes dangerous drugs and is dependent on them 吸毒成瘾者,有毒瘾者,瘾君子
2a TV/sports etc junkie informalADDICTEDsomeone who likes something so much that they seem to be dependent on it – used humorously 电视迷/体育迷等〔幽默用法〕
a technology junkie
科技迷
Examples from the Corpus
junkie• It is a dangerous part of town - there are thieves and junkies everywhere.• The toilets are often used by junkies who leave their needleslying around on the floor.• My dad's a TVjunkie.