奶奶 Traditional form: 奶奶 Pinyin (reading): nǎinai Definitions: (informal) grandma (paternal grandmother) (respectful) mistress of the house CL:位 (wèi) (coll.) boobies breasts Characters: 奶 - milk; breasts; nurse, grandmother 奶 - milk; breasts; nurse, grandmother Traditional characters: 奶 - milk; breasts; nurse, grandmother 奶 - milk; breasts; nurse, grandmother