breakwater, groin, groyne, mole, bulwark, seawall, jetty
['wig', 'coho, cohoe, coho salmon, blue jack, silver salmon, Oncorhynchus kisutch', 'cleaver, meat cleaver, chopper', 'tank, army tank, armored combat vehicle, armoured combat vehicle', 'submarine, pigboat, sub, U-boat', 'hippopotamus, hippo, river horse, Hippopotamus amphibius', 'washer, automatic washer, washing machine']