A scabbard is a cover for a sword or a knife.
A scabbard can make people think of knights, battles, and old stories.
Examples:
The knight's sword was in a scabbard.
Sheathed in its scabbard, the knife was safe.
The scabbard was made of leather.
The scabbard was too small for the sword!
In the museum, there is a golden scabbard for a famous sword.
He drew his sword from the scabbard and prepared for battle.