薬やく籠ろう中ちゅうの物もの

noun

complete mastery; at one's beck and call

Idiomatic expression meaning to have something or someone completely under one's control, like a medicine in one's own chest, ready to be used at will. Rare and literary; not used in everyday conversation.

• 彼かれはその技ぎ術じゅつを薬やく籠ろう中ちゅうの物ものとしている。

  He has complete mastery of that technique.

• あの政せい治じ家かは官かん僚りょうを薬やく籠ろう中ちゅうの物ものにしていると言いわれる。

  That politician is said to have the bureaucrats at his beck and call.