- The definition of a sheath is a case for a knife or blade, or a tube-shaped structure that wraps around for protection, or a close-fitting dress.
- An example of a sheath is a case for a sword.
- An example of a sheath is the tissue that protects a muscle fiber.
- An example of a sheath is a curve hugging cocktail dress.
A sword lies next to it's sheath.
sheath definition by Webster's New World
- a case for the blade of a knife, sword, etc.
- a covering or receptacle resembling this, as the membrane around a muscle, a leaf base enveloping a stem of grass, etc.
- a woman's closefitting dress
- Brit. condom
Origin: Middle English schethe ; from Old English sceath, akin to German scheide ; from Indo-European base an unverified form skei-, to cut, split, divide (from source Classical Latin scire, to know): the earliest form of sheath was probably a split stick
sheath definition by American Heritage Dictionary
noun pl. sheaths sheaths
- a. A case for a blade, as of a sword.b. Any of various similar coverings.
- Biology An enveloping tubular structure, such as the base of a grass leaf that surrounds the stem or the tissue that encloses a muscle or nerve fiber.
- A close-fitting dress.
- A condom.
Origin: Middle English schethe, from Old English scēath; see skei- in Indo-European roots.
sheath - Computer Definition
See cable sheath.
sheath - Medical Definition
noun pl. sheaths
sheath - Science Definition