steel arch bridge
['megalith, megalithic structure', 'swab, swob, mop', 'hippopotamus, hippo, river horse, Hippopotamus amphibius', 'hammer', 'bow tie, bow-tie, bowtie', 'streetcar, tram, tramcar, trolley, trolley car', 'carousel, carrousel, merry-go-round, roundabout, whirligig']