from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A telephone or telephone attachment that contains both a loudspeaker and a microphone, allowing several persons to participate in a call at the same time without the telephone receiver being held.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A telephone with a microphone and loudspeaker separate from those in the handset.
- n. A loudspeaker on a telephone that broadcasts the sound.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a telephone with a microphone and loudspeaker; can be used without picking up a handset; several people can participate in a call at the same time
speaker + phone (Wiktionary)