interregnum /in-tər-regˈnəm/

1. The time between two reigns
2. The time between the cessation of one and the establishment of another government
3. Any breach of continuity in order, etc

• breccia
• breccias
• brecciated
• brecham
• brechams
• Brechtian
• bred
• brede
• bredes
• bree
• breech
• breech birth
• breech births
• breechblock
• breechblocks
• breech deliveries
• breech delivery
• buff-tip moth
• buff-wheel
• buff-wheels
• bufo
• bufos
• bufotenine
• bufotenines
• buftie