Speakerphone (noun)

1. A telephone with a built-in loudspeaker and microphone, allowing hands-free conversation.
2. A telephone feature that allows the user to talk and listen without holding the phone.

Origin:

A telephone with a built-in loudspeaker and microphone, allowing hands-free conversation.

Examples:

1. He put the call on speakerphone so that everyone in the room could hear.
2. The speakerphone function is useful for conference calls or when you need to have your hands free.
3. I always use the speakerphone when I'm cooking so that I can continue to use both my hands.
4. The speakerphone feature is great for group discussions and meetings.
5. You can activate the speakerphone by pressing the button on the side of the phone.