| Word | Definitions | Synonyms |
|---|---|---|
| fogsignal | (noun) a loud low warning signal that can be heard by fogbound ships | Synonyms: foghorn |
| signal | (noun) any nonverbal action or gesture that encodes a message | Synonyms: sign, signaling, signalling |
| (noun) any incitement to action | - | |
| (noun) an electric quantity (voltage or current or field strength) whose modulation represents coded information about the source from which it comes | - |