流脑 Traditional form: 流腦 Pinyin (reading): liúnǎo Definitions: epidemic cerebrospinal meningitis (abbr. for 流行性腦膜炎/流行性脑膜炎 (liúxíngxìngnǎomóyán)) Characters: 流 - to flow, to drift, to circulate; class 脑 - brain Traditional characters: 流 - to flow, to drift, to circulate; class 腦 - brain