Simple Definition of sheath
: a cover for the blade of a knife, sword, etc.
: a protective covering
: a close-fitting dress that does not usually have a belt
Full Definition of sheath
plural sheaths play \ˈshēthz, ˈshēths\
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: asa : the tubular fold of skin into which the penis of many mammals is retractedb (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: asa : sheathing 2b : a woman's close-fitting dress that is usually worn without a beltc British : condom 1
Examples of sheath
the sheath of a sword
a piece of wire covered with a plastic sheath
Origin of sheath
Middle English shethe, from Old English scēath; akin to Old High German sceida sheath and perhaps to Latin scindere to split — more at shed
First Known Use: before 12th century
Medical Definition of sheath
1: an investing cover or case of a plant or animal body or body part: asa: the tubular fold of skin into which the penis of many mammals is retractedb: the connective tissue of an organ or part that binds together its component elements and holds it in place
2: condom 1
Learn More about sheath
Thesaurus: All synonyms and antonyms for "sheath" Medical Dictionary: Definition of "sheath" Spanish Central: Translation of "sheath" Nglish: Translation of "sheath" for Spanish speakers Britannica English: Translation of "sheath" for Arabic speakers Britannica.com: Encyclopedia article about "sheath"
Seen and Heard
What made you want to look up sheath? Please tell us where you read or heard it (including the quote, if possible).