とらのまき

虎 の 巻

  1. expressions (phrases, clauses, etc.), noun (common) (futsuumeishi)

    book of (trade) secrets, secrets
    idiomatic expression

    • これは野球の虎の巻だ。
      This is the bible of baseball.

  2. expressions (phrases, clauses, etc.), noun (common) (futsuumeishi)

    study guide (to supplement a textbook), crib, key
    idiomatic expression