Related Clues:

• Actor's signal
• Unspoken assent
• Signal an actor
• Pal of Wynken and Blynken
• Positive sign
• Silent OK
• Silent agreement
• The line before yours, e.g.
• Head movement
• You may scratch if you mishandle it
• Mosconi's pride
• Endorsement
• One of the pool balls
• Silent assent
• Positive response