Related Clues:

• Honeycomb section
• Battery unit
• Amoebas have one
• Theater turn-off?
• Group in a spies' network
• Honeycomb chamber
• Con container
• Unit of life
• Steam engine developer
• Honeycomb compartment
• Unit of electricity
• Bulb rating
• Lightbulb unit
• Room in a convent
• Scottish engineer with a unit named after him