ding-ding
n.— «The wooden double-decker “ding-ding,” so nicknamed for its clanging bell, is to make way for a new generation of streamlined aluminum models, which Hongkong Tramways Ltd says will be safer, faster and more comfortable.» —“Ding dings face the chop” by Verna Yu Townsville Bulletin/Townsville Sun (Australia) Jan. 27, 2001. (source: Double-Tongued Dictionary)