2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Sheath \Sheath\, n. [OE. schethe AS sc[=ae][eth],
sce['a][eth], sc[=e][eth]; akin to OS sk[=e][eth]ia, D.
scheede G. scheide OHG. sceida Sw skida, Dan. skede,
Icel. skei[eth]ir, pl., and to E. shed, v.t., originally
meaning, to separate, to part See {Shed}.]
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 (Zo["o]l.) 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}.
From WordNet r 1.6 [wn]:
sheath
n 1: a protective case for a knife or sword
2: an enveloping structure or covering enclosing an animal or
plant organ or part [syn: {case}]
3: suitable for formal occasions [syn: {cocktail dress}]
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