Related Clues:

• Entity
• The "U" of BTU
• Apartment, to an apartment manager
• Annie, to Warbucks
• One Adam Twelve, e.g.
• Monad
• Peck, e.g.
• Foot or fathom
• Military detachment
• Hospital section
• Work crew
• Stave (off)
• Condo, for instance
• Prison section
• Single undivided entity