予よ約やく番ばん号ごうMeaningsNoun1. confirmation number; reservation number; reference numberKanji used予in advance約promise番place in a series号ID numberComposed of予よ約やくreservation; appointment; booking; advance order; contract; subscription; pledge; programming (e.g. a device); setting (e.g. a timer)Noun番ばん号ごうnumber; series of digitsNoun