semaphore (noun) – a visual system for transmitting information using two flags that are held one in each hand
BREAKDOWN: SEM- (sign) + PHOR- (bearing)
This word is built on the root PHOR-, which means to bear, bearing, or bring.
Common PHOR- words include metaphor, pheromone, and phosphorescent.
More esoteric PHOR- words include dysphoric.