资料来源 : pyDict

被覆物;罩子;船底包板

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Sheathing \Sheath"ing\, p. pr. & a. from {Sheathe}.
   Inclosing with a sheath; as, the sheathing leaves of grasses;
   the sheathing stipules of many polygonaceous plants.

Sheathing \Sheath"ing\, n.
   That which sheathes. Specifically:
   (a) The casing or covering of a ship's bottom and sides; the
       materials for such covering; as, copper sheathing.
   (b) (Arch.) The first covering of boards on the outside wall
       of a frame house or on a timber roof; also, the material
       used for covering; ceiling boards in general.

资料来源 : WordNet®

sheathing
     n : protective covering consisting, for example, of a layer of
         boards applied to the studs and joists of a building to
         strengthen it and serve as a foundation for a
         weatherproof exterior [syn: {overlay}, {overlayer}]