Meaning of “sheath” in the English Dictionary

"sheath" in English

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sheathnoun [ C ]

uk /ʃiːθ/ us /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.

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.

UK a condom

noun [ C or U ] uk /ˈʃiː.ðɪŋ/ us /ˈʃiː.ðɪŋ/

The frame is covered by a glass and metal sheathing (= protective cover).

(Definition of “sheath” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sheath" in American English

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sheathnoun [ C ]

us /ʃiθ/

a close-fitting covering:

The cable is a copper wire with a heavy plastic sheath.

(Definition of “sheath” from the Cambridge Academic Content Dictionary © Cambridge University Press)