Related Clues:
- Section has more than one of those in 21 down
- Alcatraz unit
- Honeycomb segment
- Bit of cloning material
- All cruel (anag.)
- Locked room where part of the collection turns up
- Cooler unit
- Beehive section
- Race lull (anag.)
- Small room for nun, monk or prisoner
- Confining room
- Source of electricity in room
- Joint room?
- Terrorist group
- Road manager's always on it