安心丸

ānxīnwán ㄢ ㄒㄧㄣ ㄨㄢˊ

    • reassurance
    • something that calms people's worries

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
peace-of-mind pill
Meaning
A variant of 定心丸: something said or done that reassures people and calms their worry.

Sources