(biology, of the embryo in an egg) That has partially developed but died without hatching.

Alternative spelling of ear shell

An abalone or its shell.

(dated) Stunned or mentally unbalanced by prolonged stress such as experienced in combat or under fire (shell-fire); suffering from post-traumatic stress disorder.

Alternative form of shell-shocked

simple past tense and past participle of shell shock

(figuratively) A stunning shock. / (uncountable) A psychiatric condition characterized by fatigue caused by battle. / A person with the condition.

To stun or debilitate as by a shock.

Alternative form of hardshell

The shell of a tortoise, sometimes inaccurately the shell of a turtle, or that material. / Alternative form of tortoiseshell