手肚仁tshiú-tóo-jîn/tshiú-tóo-lîn生理構造名詞上臂內側的肌肉。阿仁佇工地縛鐵仔,較加手肚仁嘛結結結。A-jîn tī kang-tē pa̍k thih-á, khah-ke tshiú-tóo-jîn mā kiat-kiat-kiat.阿仁在工地綁鋼筋,難怪上臂內側肌肉很結實。類義手肚肉tshiú-tóo-bah