Related Clues:

• Stout serving
• Ice cream purchase, perhaps
• One of a kind?
• Course division
• The 'U' of B.T.U.
• Cohesive entity
• Hospital division
• Single item
• Pub offering
• Size for 51-Across
• ''One Adam Twelve,'' e.g.
• Military assignment
• Liquid measure
• Rental space
• Single thing