Definition of witching hour in English:

witching hour

noun

  • 1Usually with the. Midnight, with reference to the belief that witches are active and magic takes place at that time. More generally: the time, especially the dead of night, when bad or sinister things are believed to be most likely to happen.

  • 2Originally and chiefly US. The last hour of trading each month when exchange-traded stock options expire, causing increased trading activity and volatility in the market.

Origin

Mid 18th century. From witching + hour.

Pronunciation

witching hour

/ˈwɪtʃɪŋ ˌaʊə/