noun Date: circa 1882 a birth defect characterized by one or more clefts in the upper lip resulting from failure of the embryonic parts of the lip to unite
CLEFT LIP
Meaning of CLEFT LIP in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012