Strong's #2336: theke (pronounced thay'-kay)
 from 5087; a receptacle, i.e. scabbard:--sheath.
Thayer's Greek Lexicon:
 ́ 
 
  thēkē 
 
 1) that which a thing is put or laid away, a receptacle, repository, chest, box
 
 1a) used of the sheath of a sword
 
  Part of Speech: noun feminine
Relation: from G5087
 
Usage:
This word is used 1 times:
John 18:11: "sword into the  sheath: the cup which my Father"