A holster for a sword; a scabbard.
The base of a leaf when sheathing or investing a branch or stem, as in grasses.
A condom.
The foreskin of certain animals (for example, dogs and horses).
A tight-fitting dress.
Anything that has a similar shape to a scabbard that is used to hold an object that is longer than it is wide.
The insulating outer cover of an electrical cable.
One of the elytra of an insect.
Something that wraps around or surrounds something, as a sheath encases its blade.