プログレッシブ和英中辞典(第３版)の解説
さんがい【三界】
〔仏教で〕the three realms of existence: the past, present, and future
- 女は三界に家なしという
Women are said to have no home (for peaceful living) anywhere. - 子は三界の首かせ
One's children will be a burden forever.