1. to signal by waving flags, lights, or arms back and forth
2. to move back and forth in a waving motion

1. a system of signaling by waving flags or lights
2. a back-and-forth waving motion

Examples

• The sailor used flags to wigwag a message to the shore.
• She wigwagged her arms to get the driver’s attention.
• The crossing guard wigwagged the stop sign to halt traffic.
• The ship’s crew communicated using wigwag signals.
• He watched the flag wigwag in the strong wind.
• The lighthouse keeper used wigwag to warn approaching vessels.
• The dog’s tail began to wigwag excitedly when it saw its owner.