ghost definition

1. a mental representation of some haunting experience
• examples: he looked like he had seen a ghost
• examples: it aroused specters from his past
2. a writer who gives the credit of authorship to someone else
3. the visible disembodied soul of a dead person
4. move like a ghost
• examples: The masked men ghosted across the moonlit yard
5. write for someone else
• examples: How many books have you ghostwritten so far?