loudhailer

n (US bullhorn) portable electronic device for amplifying the sound of sb's voice so that it can be heard at a great distance 便携式扩音器; 电子喇叭: use a loudhailer to address the crowd 用电子喇叭向人群讲话.

loser, loss, loss-leader, lost, lost one's balance, lost one's temper, lost property, lost track, lot, loth, lotion, lots and lots, lots of, lottery, lotto, lotus, lotus position, loud, loud-mouth, loud-mouthed, loudly, loudness, loudspeaker, loudspeaker (also speaker), lough, Louis Pasteur, lounge, lounge bar (Brit) (US saloon bar), lounge-suit, lounger, lour (also lower), louse, lousy, lout, loutish, louvre (also louver), louvred (also louvered), lovable, love, love affairs,