sheathing

/ˈʃiːðɪŋ/
noun
  1. A protective covering or casing, especially for a blade, wire, or building material.
    • The roof sheathing is made of plywood to provide structural support.
    • The knife's sheathing was worn out after years of use.
    • The electrician replaced the damaged sheathing on the power cable.
  2. The outer layer of a building, such as boards or panels, that provides protection and insulation.
    • The contractor used OSB sheathing for the new garage walls.
    • Foam sheathing helps improve the energy efficiency of a home.
    • The house's exterior sheathing was installed before the siding went on.
verb
  1. Present participle of sheathe: the act of placing something into a sheath or covering.
    • She practiced sheathing the knife quickly for the competition.
    • The technician is sheathing the fiber optic cable in a protective tube.
    • He was sheathing his sword when the enemy surrendered.