breakwater, groin, groyne, mole, bulwark, seawall, jetty
['puck, hockey puck', 'pitcher, ewer', 'backpack, back pack, knapsack, packsack, rucksack, haversack', 'saltshaker, salt shaker', 'prayer rug, prayer mat', 'ashcan, trash can, garbage can, wastebin, ash bin, ash-bin, ashbin, dustbin, trash barrel, trash bin', 'street sign']