neck brace
['backpack, back pack, knapsack, packsack, rucksack, haversack', 'bathing cap, swimming cap', 'nail', 'wool, woolen, woollen', 'pedestal, plinth, footstall', 'harmonica, mouth organ, harp, mouth harp', 'hen-of-the-woods, hen of the woods, Polyporus frondosus, Grifola frondosa']