心しん猿えん

noun

passion; unsettled mind

Rare literary term for the restless, passionate mind, often compared to a monkey. Found in classical or Buddhist writings; not used in everyday speech.

• 「心しん猿えん」とは、心こころが猿さるのように騒さわぎ立たつことをいう。

  The word 心猿 refers to the mind being restless like a monkey.