speakerphone

speak·er·phone  (spkr-fn)

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.

Thesaurus

Noun

1.

speakerphone - 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 phone, telephone, telephone set - electronic equipment that converts sound into electrical signals that can be transmitted over distances and then converts received signals back into sounds; "I talked to him on the telephone"