meg·a·phone / ˈmegəˌfōn/ • n. a large funnel-shaped device for amplifying and directing the voice.• v. [tr.] utter through, or as if through, a megaphone: the director stood around megaphoning orders | [intr.] it was only their guides megaphoning to them. DERIVATIVES: meg·a·phon·ic / ˌmegəˈfänik/ adj.

megaphone

megaphone. A large speaking tpt. Also a device introduced by Edison for listening at a distance of some miles without the use of wires or electricity—practically an improved ear-tpt. on a large scale.