a narrow elongated opening or fissure between two symmetrical parts

二つの対称的な部分の間にある細長い開口部や亀裂

informal terms for the mouth

口の口語的表現

any of three pairs of glands in the mouth and digestive system that secrete saliva for digestion

口腔と消化器系にある唾液を分泌する三対の腺のいずれか

the upper surface of the mouth that separates the oral and nasal cavities

口腔と鼻腔を分ける口の上の表面

the kind and number and arrangement of teeth (collectively) in a person or animal

人や動物の歯の種類、数、および配置（全体として）

the tissue (covered by mucous membrane) of the jaws that surrounds the bases of the teeth

歯の根元を囲む顎の粘膜で覆われた組織

the cavity between the jaws and the cheeks

顎と頬の間の空間

the externally visible part of the oral cavity on the face and the system of organs surrounding the opening

顔の上にある口腔の外部から見える部分とその開口部を囲む器官のシステム