sem·a·phore (s m  -fôr , -f r)n. 1. A visual signaling apparatus with flags, lights, or mechanically moving arms, as one used on a railroad. 2. A visual system for sending information by means of two flags that are held one in each hand, using an alphabetic code based on the position of the signaler's arms. tr. & intr.v. sem·a·phored, sem·a·phor·ing, sem·a·phores To send (a message) or to signal by semaphore. [Greek s  ma, sign + -phore.]sem a·phoric adj.sem a·phori·cal·ly adv. |
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