sheathing

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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
• Derivationally related forms:
overlay (for: overlayer), overlay (for: overlay), sheathe
• Hypernyms:
protective covering, protective cover, protection