To form a scar.
To heal a wound through scarring (by causing a scar or cicatrix to form).
To put (something such as a knife or sword) into a sheath.
To thrust (a sharp object like a sword, a claw, or a tusk) into something.
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.