Definify.com

Webster 1913 Edition

Adj.

(Zool.)

Having the upper jaw projecting beyond the lower, with the upper incisors in advance of the lower; – said of dogs.

pig-jawed ‎(comparative more pig-jawed, superlative most pig-jawed)

(zoology) Having the upper jaw projecting beyond the lower, with the upper incisors in advance of the lower; said of dogs.