Definition of night-spell in US English:

night-spell

noun

historical
  • 1A spell intended as protection against harm at night.

  • 2A spell intended to cause harm or trouble at night. Now rare.

Origin

Late Middle English; earliest use found in Geoffrey Chaucer (c1340–1400), poet and administrator. From night + spell.

Pronunciation

night-spell

/ˈnʌɪtspɛl/