元となった辞書の項目
尻尾を掴む
verb
(idiomatic) to have something on someone; to catch someone out; to trip someone up; to have evidence; to get a lead / to grab by the tail
意味（1）
(idiomatic) to have something on someone; to catch someone out; to trip someone up; to have evidence; to get a lead
意味（2）
to grab by the tail
