To convey (a message) by means of flag signals.
To cause an effect in (a cell) by the release of a chemical, such as a neurotransmitter or hormone.
To set forth in words; state:
To communicate by means of such devices as lights or signs
Find another word for semaphore. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for semaphore, like: flag, signal, express, words, SIGTRAP, sysv-style, , mutexes and SIGKILL.