wigwag

(noun, verb)

noun

1. Any of a number of mechanical or electrical devices which cause a component to oscillate between two states.

verb

1. send a signal by waving a flag or a light according to a certain code

Definition categories: contact, brandish, flourish, wave

2. signal by or as if by a flag or light waved according to a code

Definition categories: communication, sign, signal, signalise, signalize