sheath /ˈʃiθ/
鞘,葉鞘,翅鞘
sheath /ˈʃɪθ/ 名詞
鞘,護套,屏極
sheath
外皮; 外層覆蓋物
Sheath n.
1. A case for the reception of a sword, hunting knife, or other long and slender instrument; a scabbard.
The dead knight's sword out of his sheath he drew. --Spenser.
2. Any sheathlike covering, organ, or part. Specifically: (a) Bot. The base of a leaf when sheathing or investing a stem or branch, as in grasses. (b) Zool. One of the elytra of an insect.
Medullary sheath. Anat. See under Medullary.
Primitive sheath. Anat. See Neurilemma.
Sheath knife, a knife with a fixed blade, carried in a sheath.
Sheath of Schwann. Anat. See Schwann's sheath.
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sheath
n 1: a protective covering for a knife or sword
2: an enveloping structure or covering enclosing an animal or
plant organ or part [syn: case]
3: a dress suitable for formal occasions [syn: cocktail dress]