sheathe
‘furnish (a sword, etc.) with a sheath’
Lexical development traced from the Tamil root:
M.E. shethe ‘close-fitting case or covering for a blade’ < O.E. sceaþ, scæþ < Proto-G. skaith- or O.E. sceaþian ‘put (a sword, etc.) in a sheath’ < sheedh < skei- < Tamil kappu