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Definition of Sheath
1. Noun. A protective covering (as for a knife or sword).
Generic synonyms: Protection, Protective Cover, Protective Covering
2. Noun. An enveloping structure or covering enclosing an animal or plant organ or part.
Specialized synonyms: Theca, Lorica, Medullary Sheath, Myelin Sheath, Neurilemma, Neurolemma, Husk
Generic synonyms: Cover, Covering, Natural Covering
Derivative terms: Case
3. Noun. A dress suitable for formal occasions.
Definition of Sheath
1. n. A case for the reception of a sword, hunting knife, or other long and slender instrument; a scabbard.
Definition of Sheath
1. Noun. A scabbard; a holster for a sword. ¹
2. Noun. Anything that has a similar shape to a scabbard for a sword that is for the purpose of holding an object that is longer than it is wide; a case. ¹
3. Noun. A tight-fitting dress. ¹
4. Noun. (British) A condom. ¹
5. Noun. The foreskin of certain animals, e.g. dogs and horses. ¹
6. Verb. To put an object (especially a weapon, in particular, a sword) into its sheath. ¹
¹ Source: wiktionary.com
Definition of Sheath
1. to sheathe [v -ED, -ING, -S] - See also: sheathe
Medical Definition of Sheath
1. A protective covering. The lower part of leaf enveloping stem or culm. A secreted, tubular structure formed around a chain of cells or around a bundle of filaments, cells within a sheath may or may not subsequently separate from the sheath. A layer of outer membrane covering the bacterial flagella. (09 Oct 1997)