diachylon /dī-akˈi-lon/ or diachylum /dī-akˈi-ləm/

1. Formerly a plaster of plant juices
2. Now lead-plaster

• unknowingnesses
• unknown
• unknownness
• unknownnesses
• unknown quantity
• unknowns
• unlabelled
• unlaborious
• unlaboured
• unlabouring
• unlace
• unlaced
• unlaces
• unlacing
• unlade
• unladed
• unladen
• unlades
• unlading
• unladings
• unladylike
• unlaid
• unlamented
• unlash
• unlashed