胃小凹 Traditional form: 胃小凹 Pinyin (reading): wèixiǎo'āo Definitions: (physiology) gastric pits Characters: 胃 - stomach 小 - small, tiny, insignificant 凹 - concave, hollow; depressed; pass, valley Traditional characters: 胃 - stomach 小 - small, tiny, insignificant 凹 - concave, hollow; depressed; pass, valley