unicycle, monocycle
['maraca', 'worm fence, snake fence, snake-rail fence, Virginia fence', 'wool, woolen, woollen', 'streetcar, tram, tramcar, trolley, trolley car', 'cellular telephone, cellular phone, cellphone, cell, mobile phone', 'nematode, nematode worm, roundworm', 'ashcan, trash can, garbage can, wastebin, ash bin, ash-bin, ashbin, dustbin, trash barrel, trash bin']