1. a telephone with a built-in loudspeaker and microphone that allows hands-free conversation

Examples

• She put the call on speakerphone so everyone could hear.
• The conference room has a speakerphone for group calls.
• I answered the speakerphone while cooking dinner.
• The speakerphone made it easy to take notes during the meeting.
• He used the speakerphone feature on his mobile phone.
• The office speakerphone has excellent sound quality.