Related Clues:

• Minute bit
• Tiny speck
• Forum letter
• Airport posting: Abbr.
• JFK letters
• 7th Greek letter
• Symbol for viscosity
• Metal core?
• Kappa preceder
• In-flight info
• In-flight announcement
• Very small amount
• When a plane is due in: Abbr.
• Smidgeon
• Trivial bit