(1)enclose with a sheath; "sheathe a sword"
(2)さやで囲む
(3)cover with a protective sheathing; "sheathe her face"
(4)保護被覆で覆う
(5)plunge or bury (a knife or sword) in flesh
(6)（ナイフや刀を）肉に突き刺す、または肉に埋める