noun a close-fitting cover for something, especially something that is elongated in shape such as a sword or knife
A protective covering or case for a part of the body, such as the sheath around a tendon or the sheath that encloses the penis.
A protective covering for a surgical instrument, such as a scalpel or catheter.
A close-fitting cover for the blade of a knife or sword.
A protective covering for an electrical wire or cable.
In writing, a sheath may be used as a metaphor for protection or concealment, as in 'the sheath of secrecy surrounding the government's actions'.
In surgery, a sheath may refer to a protective covering for a surgical instrument or a tube used to insert or remove objects from the body.
In electrical work, a sheath may refer to the outer covering of a cable or wire that provides insulation and protection.
In tree care, a sheath may refer to the protective covering of a bud or leaf base on a plant.
In fashion design, a sheath may refer to a close-fitting dress or gown that is typically sleeveless and has a straight silhouette.