loudspeaker, speaker, speaker unit, loudspeaker system, speaker system
['window shade', 'hand-held computer, hand-held microcomputer', 'toaster', 'flagpole, flagstaff', 'scoreboard', 'cash machine, cash dispenser, automated teller machine, automatic teller machine, automated teller, automatic teller, ATM', 'binoculars, field glasses, opera glasses']