とらのまき

虎の巻

表記・読み：トラの巻・とらの巻・とらのまき

1. 1

   book of (trade) secrets; secrets

   expressions (phrases, clauses, etc.)名詞idiomatic expression
2. 2

   study guide (to supplement a textbook); crib; key

   expressions (phrases, clauses, etc.)名詞idiomatic expression