You might stick a dagger into one
Else clues• Blade cover
• Blade holder
• Case
• Close-fitting case
• Close-fitting dress
• Condom, to Brits
• Cover
• Dagger case
• Dagger's place
• Dress style
• Epee protector
• Knife holder
• Protective case
• Protective covering
• Saber case
• Saber case, e.g.
• Saber casing
• Scabbard
• Sexy dress
• Sword case
• Sword holder
• Sword's covering
• Tennis racket case
• Unbelted dress
• A dress suitable for formal occasions
• A protective covering for a knife or sword
• An enveloping structure or covering enclosing an animal or plant organ or part