sheathing
noun
[ ˈʃiːðɪŋ ]
• protective casing or covering.
sheathe
verb
• put (a weapon such as a knife or sword) into a sheath.
• "I sheathed my dagger"
• encase (something) in a close-fitting or protective covering.
• "her legs were sheathed in black stockings"
Origin:
late Middle English: from sheath.