Definitions

1. 1. to take something as a warning (idiom)
2. 2. to draw a lesson from a case where things turned out badly

Components

• 引 yǐn – to draw (e.g. a bow)
• 以为 yǐ wéi – to think (i.e. to take it to be true that ...) (Usually there is an implication that the notion is mistaken – except when expressing one's own current opinion.)
• 戒 jiè – to guard against