Strong's #3747: hosper (pronounced hos'-per)
 of uncertain affinity; a bone:--bone.
Thayer's Greek Lexicon:
 ̓́ / ̓͂ 
 
  osteon / ostoun 
 
 1) a bone
 
  Part of Speech: noun neuter
Relation: of uncertain affinity
 
Usage:
This word is used 5 times:
Matthew 23:27: "but are within full of dead  men's bones, and of all uncleanness."
Luke 24:39: "not flesh and  bones, as ye see me have."
John 19:36: "the Scripture should be fulfilled,  A bone of him shall not be broken."
Ephesians 5:30: "and of his  bones."
Hebrews 11:22: "gave commandment concerning his  bones."