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

plural of tortoise shell

Alternative form of tortoiseshell