from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One who signals.
- n. A device that sends a signal.
from The Century Dictionary and Cyclopedia
- n. One who or that which makes signals; a person or an instrument employed in signaling.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. someone who communicates by signals
to signal + -er (Wiktionary)