What is another word for "whalebone"?

Roget's Thesaurus (1911) lists these synonyms for "whalebone": back, baleen, bounce, buoyancy, buoyant, caoutchouc, distend, ductile, elastic, elasticity, extend, flex, flexibility, flexible, gum, latex, modulus, natural, plastic, proportional, recoil, renitency, renitent, resilience, resilient, rubber, spring, springiness, strain, stress, stretch, synthetic, tensile, the.