プログレッシブ和英中辞典(第4版)の解説
あとつぎ【跡継ぎ】
❶〔家名を継ぐ者〕an inheritor, an heir;〔女〕an heiress
❷〔芸道,学問などの後継者〕a successor; an heir
一番弟子の彼がその派の跡継ぎになった
As the foremost disciple, he became heir to the leadership of that school.
跡継ぎがないので彼の芸は一代限りで消えてしまうだろう
Since he has no disciples to succeed him, his art will die with him.