臀大肌 Traditional form: 臀大肌 Pinyin (reading): túndàjī Definitions: (anatomy) gluteus maximus Characters: 臀 - buttocks 大 - big, great, vast, high, deep 肌 - flesh, skin; muscle, tissue; meat on bones Traditional characters: 臀 - buttocks 大 - big, great, vast, high, deep 肌 - flesh, skin; muscle, tissue; meat on bones