1
: a case for a blade (as of a knife)
2
: an investing cover or case of a plant or animal body or body part: such as
a
: the tubular fold of skin into which the penis of many mammals is retracted
b(1)
: the lower part of a leaf when surrounding the stem
(2)
: an ensheathing spathe
3
: any of various covering or supporting structures that resemble in appearance or function the sheath of a blade: such as
b
: a woman's close-fitting dress that is usually worn without a belt
c
British
: condom sense 1
less common variant of sheathe
1
: to put into or furnish with a sheath
2
: to plunge or bury (a weapon, such as a sword) in flesh
3
: to withdraw (a claw) into a sheath
4
: to case or cover with something (such as sheets of metal) that protects
Cite this Entry
“Sheath.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sheath. Accessed 26 Aug. 2026.
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