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English definition of “sheath”

sheath

noun [C]     /ʃiːθ/
a close-fitting covering to protect something: The cable has a copper wire surrounded by a plastic sheath. The nerves are protected by thin sheaths of fatty tissue.Coverings and layers a cover into which a knife or sword fits so that the blade cannot cut someone when it is not being used: He drew the knife from its jewelled leather sheath.Hand weaponsHandguns and rifles UK a condomContraception sheathing     /ˈʃiː.ðɪŋ/ noun [C or U] The frame is covered by a glass and metal sheathing (= protective cover).Coverings and layers
(Definition of sheath noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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