Clue: Optic activity during sleep

Answer: REM

Length: 3

---

Similar Clues:

• Sleepover activity, perhaps (PILLOWFIGHT with 11 letters)
• Dreamer's optical activity, for short (REM with 3 letters)
• Sleep activity, for short (REM with 3 letters)
• Sleep activity (REM with 3 letters)
• Providing with sleeping quarters (BUNKING with 7 letters)
• Sleep state for an electronic device (STANDBYMODE with 11 letters)
• Market activity (e.g. ARBITRAGE with 9 letters)
• Mouse activity (CLICK with 5 letters)
• Actress Wilson of "Sleepless in Seattle" (RITA with 4 letters)
• One who can't get to sleep (TOSSER with 6 letters)