tusker
['backpack, back pack, knapsack, packsack, rucksack, haversack', 'grey whale, gray whale, devilfish, Eschrichtius gibbosus, Eschrichtius robustus', 'ping-pong ball', 'thresher, thrasher, threshing machine', "plunger, plumber's helper", 'horizontal bar, high bar', 'American egret, great white heron, Egretta albus']