Learn how to say Sheath correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word sheath:
noun (plural sheaths /ʃiːðz, ʃiːθs/)
a close-fitting cover for the blade of a knife or sword.
a structure in living tissue which closely envelops another:
the fatty sheath around nerve fibres
a protective covering around an electric cable.
(also sheath dress) a woman’s close-fitting dress.
chiefly British a condom.
Old English scǣth, scēath ‘scabbard’, of Germanic origin; related to Dutch schede, German Scheide, also to the verb shed2