signal

1. n. A sign made for the purpose of giving notice to a person of some occurence, command, or danger; also, a sign, event, or watchword, which has been agreed upon as the occasion of concerted action. Source: opted

2. n. A token; an indication; a foreshadowing; a sign. Source: opted

3. a. Noticeable; distinguished from what is ordinary; eminent; remarkable; memorable; as, a signal exploit; a signal service; a signal act of benevolence. Source: opted

4. a. Of or pertaining to signals, or the use of signals in conveying information; as, a signal flag or officer. Source: opted

5. v. t. To communicate by signals; as, to signal orders. Source: opted

6. v. t. To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor. Source: opted

7. adj. notably out of the ordinary Source: wordnet

8. n. any nonverbal action or gesture that encodes a message Source: wordnet

9. n. any incitement to action Source: wordnet

10. n. an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes Source: wordnet

11. v. communicate silently and non-verbally by signals or signs Source: wordnet

12. v. be a signal for or a symptom of Source: wordnet

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