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

• billet-head
• billet-heads
• billeting
• billets
• billets-doux
• billfish
• billfishes
• billfold
• billfolds
• billhead
• billheads
• billhook
• billhooks
• billiard
• billiard ball
• billiard balls
• billiard cloth
• billiard cloths
• billiard cue
• billiard cues
• billiard-marker
• billiard-markers
• billiards
• billiard table
• billiard tables