瘾(癮)yǐn 1.由于神经中枢经常接受某种外界刺激而形成的习惯性{addiction; habitual craving formed as a result of the central nervous system's repeated exposure to a stimulus}: 烟～{craving for tobacco}|他喝酒的～真大。{He's too fond of alcohol.} 2.泛指浓厚的兴趣{(in a broad sense) strong interest}: 球～{passion for ballgames}|他看书看上～了。{He's crazy about books.}