Gap"er (?), n.
1.
One who gapes.
2. Zool. (a)
A European fish. See 4th Comber.
(b)
A large edible clam (Schizothaerus Nuttalli), of the Pacific coast; -- called also gaper clam.
(c)
An East Indian bird of the genus Cymbirhynchus, related to the broadbills.
© Webster 1913.