To thrust (a sharp object like a sword, a claw, or a tusk) into something.
To put (something such as a knife or sword) into a sheath.
Of an animal: to draw back or retract (a body part) into the body, such as claws into a paw.
To encase (something) with a protective covering.
To deprive of a sheath; to draw from the sheath or scabbard, as a sword.