Related Clues:

• Signals
• Acknowledges
• Signals, as to an auctioneer
• Greets, in a way
• Acknowledges in passing
• Greets nonverbally
• Signals with a head movement
• Gives a silent 'OK'
• Acknowledges nonverbally
• Greets aloofly
• Signals, in a way
• Greets without speaking
• Gives a passing acknowledgment
• Greets with a head bob
• Greets silently