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WordReference Random House Learner's Dictionary of American English © 2024sheath /ʃiθ/USA pronunciation n. [countable], pl. sheaths /ʃiðz/USA pronunciation . - a close-fitting covering, esp. for the blade of a sword or dagger:He put his knife back in its sheath.
- Biologya closely enveloping part in an animal or plant.
- a close-fitting garment with a straight shape.
- a condom.
WordReference Random House Unabridged Dictionary of American English © 2024sheath (shēth),USA pronunciation n., pl. sheaths (shēᵺz),USA pronunciation v. n. - a case or covering for the blade of a sword, dagger, or the like.
- any similar close-fitting covering or case.
- a condom.
- Biologya closely enveloping part or structure, as in an animal or plant.
- Botanythe leaf base when it forms a vertical coating surrounding the stem.
- a close-fitting dress, skirt, or coat, esp. an unbelted dress with a straight drape.
- Electricitythe metal covering of a cable.
- Electronics
- the metal wall of a wave guide.
- a space charge formed by ions near an electrode in a tube containing low-pressure gas.
- the region of a space charge in a cathode-ray tube.
v.t. - to sheathe.
- bef. 950; Middle English s(c)heth(e), Old English scēath; cognate with German Scheide; see shed2
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