Definition of frog-face in US English:

frog-face

noun

  • 1A face like that of a frog; a person with such a face (frequently as a derogatory form of address).

  • 2Medicine a type of facial deformity characterized by flattening and broadening of the nose and protrusion of the eyes, associated with tumours of the nasal cavity.

Origin

Mid 18th century; earliest use found in Daniel Turner (1667–1741), surgeon and physician.