paddleboat UK /ˈpædəlˌbəʊt/US /ˈpædəlˌboʊt/ noun2 •A boat propelled by a paddle wheelIt also caused major problems for businesses which relied on the lake and river, including the city's paddleboat operator and the river cruise company. — 2009 •(US, Australia) a pedaloNaval sources report the amazing rescue of two 65-year-old women who were found floating 400 miles off the coast of California — in a tiny paddleboat! — 1996 formspaddleboats