She sells sea shells by the sea shore, but the shells she sells aren't sea shells, I'm sure.
She shells six sea shells.
My dear Mr. Hale: The beautiful shells came last night.
The shells and kernels are then separated in a winnowing machine.
For a long time these shells or hulls, as they are called, were burned at oil mills for fuel, 22 tons being held equal to a cord of wood, and 43 tons to a ton of coal.
Tortoise shells are my absolute favorites.