てんかほうとう 天下の宝刀 LinksSentence search for 天下の宝刀Sentence search for てんかのほうとうKanji details for 天, 下, 宝 and 刀Edit in JMdict Expressions (phrases, clauses, etc.), Noun1. one's last resort; trump cardIdiomatic expression, See also 伝家の宝刀, non-standard variant of 伝家の宝刀 Discussions Log in to talk about this word.