sheath

sheath的音标和读音：
DJ音标发音： [ʃi:θ]
KK音标发音： [ʃiθ]

sheath的词性：
n.（名词）

1. A case for a blade, as of a sword.
鞘：刃的外壳，如剑

2. Any of various similar coverings.
套：任一种类似覆盖物

3. Biology An enveloping tubular structure, such as the base of a grass leaf that surrounds the stem or the tissue that encloses a muscle or nerve fiber.
【生物学】 鞘，兜：一种包围的管状结构，例如围绕茎的草叶基部或包围肌肉或神经纤维的组织

4. A close-fitting dress.
紧身装

sheath的词性：
v.tr.（及物动词）

5. To encase or cover with or as if with a sheath; sheathe.
包，盖：用或好象用鞘包围或覆盖；包覆

sheath的词源：

6. Middle English shethe
中古英语 shethe

7. from Old English sc?ath * see skei-
源自 古英语 sc?ath *参见 skei-