submarine, pigboat, sub, U-boat
['bathtub, bathing tub, bath, tub', 'bannister, banister, balustrade, balusters, handrail', 'washbasin, handbasin, washbowl, lavabo, wash-hand basin', 'streetcar, tram, tramcar, trolley, trolley car', 'leatherback turtle, leatherback, leathery turtle, Dermochelys coriacea', 'sea anemone, anemone', 'ashcan, trash can, garbage can, wastebin, ash bin, ash-bin, ashbin, dustbin, trash barrel, trash bin']