Wigwag

Webster's Dictionary of the English Language

·add. ·vt & ·vi To move to and fro, to wag.

II. Wigwag ·vt To signal by means of a flag waved from side to side according to a code adopted for the purpose.

III. Wigwag ·add. ·vt & ·vi Act or art of wigwagging; a message wigwagged;

— chiefly attributive; as, the wigwag code.