gaper

[ gey-per ]
/ ˈgeɪ pər /

noun

a person or thing that gapes.
Also called horse clam. a large clam, Tresus capax, common on gravelly and coarse-sand beaches.

Origin of gaper

First recorded in 1630–40; gape + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for gaper

British Dictionary definitions for gaper

gaper

/ (ˈɡeɪpə) /

noun

a person or thing that gapes
any of various large marine bivalve molluscs of the genera Mya and Lutraria that burrow in muddy sand. M. arenaria is the American soft-shelled clam and the two species of Lutraria are the otter shells. The valves have a permanent gap at the hind end
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012