Clue: Warm-up or main

Answer: ACT

Length: 3

---

Similar Clues:

• Main character in "A Clockwork Orange" (ALEX with 4 letters)
• Main order in a restaurant (ENTREE with 6 letters)
• Main order (ENTREE with 6 letters)
• Main part of an order (ENTREE with 6 letters)
• U.N.'s main deliberative organ (GENERALASSEMBLY with 15 letters)
• Main-event warm-up (PRELIM with 6 letters)
• "Orphan Black" main character Manning (SARAH with 5 letters)
• Winter warmer-upper (e.g. COCOA with 5 letters)
• Popular warmer-upper (COCOA with 5 letters)
• After-school warmer-upper (COCOA with 5 letters)