photism /fōˈti-zm/

1. A hallucinatory vision of light
2. A visual sensation that results from the experience of hearing, feeling, tasting, smelling or thinking something

• headsticks
• headstock
• headstocks
• headstone
• headstones
• head-stream
• head-streams
• headstrong
• heads-up
• heads-ups
• heads will roll
• head teacher
• head teachers
• head-tire
• head-tires
• head to head
• head-to-head
• head up
• head-up display
• head voice
• head voices
• head waiter
• head waiters
• headwall
• headwater