to insert (a sword, dagger, etc) into its sheath

Patricians, draw your swords, and sheathe them not till Saturninus be Rome's Emperor — Shakespeare

said of an animal, esp a cat: to retract (its claws)

to cover or encase (something) in or as if in a sheath

Her eyes, like marigolds, had sheathed their light — Shakespeare

his legs … being sheathed in bulging leggings — Hardy

I had its big door sheathed with boiler iron — Mark Twain