tricycle
Word family nountricyclertricyclingtricyclisttricycleadjectivetricyclic
tri·cy·cle /ˈtraɪsɪkəl/ noun [countableC]
TTBa bicycle with three wheels, especially for young children 〔尤指幼儿骑的〕三轮自行车 Origin tricycle (1900-2000) French tri- + Greek kyklos “circle, wheel”