1. a ghost, goblin, or other supernatural creature, especially one that is mischievous or frightening
Usage: informal; often used in plural form 'ghoulies'; chiefly British

Examples

• The children told stories about ghoulies lurking in the dark forest.
• According to the legend, ghoulies would emerge from the graveyard on Halloween night.
• The old mansion was said to be haunted by all manner of ghoulies and ghosties.
• She wasn't afraid of ghoulies; she found them more amusing than scary.
• The movie featured a collection of creepy ghoulies terrorizing the village.