[spee-ker-fohn] 
| a telephone or telephone attachment equipped with both loudspeaker and microphone, thus permitting the instrument to be used without being held. |
| speak·er·phone (spē'kər-fōn') 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. |
kərˌfoʊn