SIGNAL (programming language)
WordNet
adjective
(1) Notably out of the ordinary
"The year saw one signal triumph for the Labour party"
noun
(2) Any communication that encodes a message
"Signals from the boat suddenly stopped"
(3) Any incitement to action
"He awaited the signal to start"
"The victory was a signal for wild celebration"
(4) An electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes
verb
(5) Be a signal for or a symptom of
"These symptoms indicate a serious illness"
"Her behavior points to a severe neurosis"
"The economic indicators signal that the euro is undervalued"
(6) Communicate silently and non-verbally by signals or signs
"He signed his disapproval with a dismissive hand gesture"
"The diner signaled the waiters to bring the menu"