noun

• (woodworking, countable and uncountable, sometimes attributive) Lengths of wood that have been made pliable by heating with steam and then bent into the appropriate shape (to make furniture, ships' hulls, etc.).
  "About this time [Michael] Thonet received his first major public commission from the famous Cafe Daum in Vienna. From this point on, the bentwood chair would be known by many as the Cafe Chair[…]. The back is made of four layers of twisted mahogany laminates, while the front legs appear to be bent from solid stock with turned capitals, which act as shoulders for the tenon of the leg into the seat. The seat frames are made of five layers of mahogany, as they were in the Schwarzenburg chairs. Because of its lightness, durability and accommodating design, the bentwood chair was perfectly suited for public places."
• (countable) An object, especially a piece of furniture, made from bentwood.
  "The two basic types of fishhooks are almost equally represented within the site, with composite fishhooks exhibiting only a slightly higher relative frequency than that of bentwoods."