同どう期き信しん号ごうMeaningsNoun1. synchronous idle; SYNKanji used同same期period (of time)信belief号ID numberPitch accentどうきしんごうComposed of同どう期きsame period; corresponding period; same year (of graduation, entering a company, etc.); contemporary; classmate; synchronization; synchronismNoun信しん号ごうsignal; signalling; signaling; traffic light; traffic signalNoun