speakerphone

A component of a telephone that has a loudspeaker and a microphone and allows a person to communicate without holding the telephone receiver and that allows more than one person to participate in a telephone call using a single receiver.

A telephone with a microphone and loudspeaker separate from those in the handset.

A loudspeaker on a telephone that broadcasts the sound.

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.