What does Shell mean?

noun — hard outer covering or case of certain organisms such as arthropods and turtles
noun — the hard largely calcareous covering of a mollusc or a brachiopod
noun — a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
noun — ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile
noun — the housing or outer covering of something
noun — a very light narrow racing boat

Word lists by topic