sheath
/ʃiːθ/noun
(pl. sheaths /ʃiːðz/)
1- a close-fitting cover for something, especially something that is elongated in shape, in particular（形状细长的）紧贴覆盖物, 尤指：
1.1
- a cover for the blade of a knife or sword（刀、剑的）鞘。
1.2
- a structure in living tissue which closely envelops another（有机体的）鞘：
the fatty sheath around nerve fibres.
神经纤维周围的脂肪鞘。
1.3
- （亦作 sheath dress）a woman's close-fitting dress紧身女装：
a tight sheath of black and gold lurex.
黑、金双色卢勒克斯紧身女装。
1.4
- a protective covering around an electric cable（电缆的）护皮, 护套。
1.5
- a condom阴茎套, 避孕套。
派生词
sheathless
adjective词源
Old English scǣth, scēath 'scabbard', of Germanic origin; related to Dutch schede, German Scheide, also to the verb SHED2.