To envelop in a protective case.
To withdraw into such a case.
The silky protective case spun by the larvae of some insects in which they metamorphose, the pupa.
Any similar protective case, whether real or metaphorical.
To implement safeguarding.
To escort safely.
To protect, to keep safe.
A safe-conduct or passport, especially in time of war.
Something that serves as a guard or protection; a defense.
One who, or that which, defends or protects; defence; protection.