脑脊液 Traditional form: 腦脊液 Pinyin (reading): nǎojǐyè Definitions: cerebrospinal fluid (CSF) Characters: 脑 - brain 脊 - spine, backbone; ridge 液 - fluid, liquid; juice, sap Traditional characters: 腦 - brain 脊 - spine, backbone; ridge 液 - fluid, liquid; juice, sap