snorkel
['backpack, back pack, knapsack, packsack, rucksack, haversack', 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias', 'strainer', 'book jacket, dust cover, dust jacket, dust wrapper', 'hatchet', 'marimba, xylophone', 'binder, ring-binder']