whalebone
From Longman Dictionary of Contemporary Englishwhalebonewhale‧bone /ˈweɪlbəʊn $ -boʊn/ noun [uncountable] TIHBAa hard substance taken from the upper jaw of whales, used in the past for making women’s clothes stiffExamples from the Corpuswhalebone• The cetaceans are divided into two groups: the baleen whales which have whalebone instead of teeth and the toothed whales.• It yielded twenty-five whales, seventeen hundred barrels of oil, and three tons of whalebone.• From the whalebone bodices of the nineteen hundreds to the flimsy teasers of the nineties.