microdot /mīˈkrə-dot/

1. A photograph of usu secret material reduced to the size of a large dot
2. A small pill containing concentrated LSD (slang)

• grist-mills
• grists
• grist to the mill
• grisy
• grit
• grit blasting
• grith
• griths
• grith-stool
• grith-stools
• grits
• gritstone
• gritstones
• gritted
• gritter
• gritters
• grittest
• grittier
• grittiest
• grittily
• grittiness
• grittinesses
• gritting
• gritty
• grivet