incubus /inˈ or ingˈkū-bəs/

1. A devil supposed to assume a male body and have sexual intercourse with women in their sleep (cf succubus)
2. A nightmare
3. Any oppressive person, thing or influence

• fly line
• fly lines
• flymaker
• flymakers
• flyman
• flymen
• Flymo
• fly off the handle
• fly-on-the-wall
• fly open
• fly orchis
• fly orchises
• fly out
• flyover
• flyovers
• flypaper
• flypapers
• flypast
• flypasts
• flype
• flyped
• flypes
• flyping
• flypitch
• flypitcher