旧きゅう号ごうMeanings1nounold name; back numberRefers to a previous name or a past issue of a periodical. 'Back number' is used for magazines or journals.この雑ざっ誌しの旧きゅう号ごうは図と書しょ館かんで読よめます。You can read back numbers of this magazine at the library.彼かれの旧きゅう号ごうは山やま田だ太た郎ろうです。His old name is Taro Yamada.