► 名詞補欠  [ほけつ]    
meaning:  backup  rank: 3☆ 
彼は
野球チームの補欠だ ⇨ He is a backup for his baseball team
More examples:- この補欠選挙は総選挙の前哨戦だ ⇨ This special election is a preliminary battle before the general election
 - 彼は補欠なのに十億円も払われている ⇨ He is just a backup but paid ¥1K mil
 - 補欠選挙が告示された ⇨ A supplementary election has been publicly announced