half shell

American  

noun

1. either of the halves of a double-shelled creature, as of an oyster, clam, or other bivalve mollusk.

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Etymology

Origin of half shell

An Americanism dating back to 1855–60

Example Sentences

Grand Central Market, once known for cheap produce and tacos, had started the gentrification that would bring in Eggslut, gourmet nut-butter sandwiches and oysters on the half shell.

From Los Angeles Times • Apr. 25, 2023

When I asked where the oysters on the half shell are from, a waiter blurted out “Connecticut.”

From Washington Post • Jan. 21, 2022

Try roasted oysters in chipotle bourbon butter with toasted baguette, raw oyster on the half shell, or borrow the farm’s shucking equipment for a DIY lunch with a dozen oysters.

From Seattle Times • Nov. 10, 2021

I was craving clams on the half shell.

From New York Times • Jul. 30, 2020

Today we make five pounds of shrimp, some clams on the half shell, four vegetable trays with broccoli, cauliflower, celery and carrots, and three trays of mushroom vol-au-vents.

From "Ask the Passengers" by A.S. King