loudspeaker noun
LOUDSPEAKER + VERB broadcast sth Loudspeakers broadcast the football results.
LOUDSPEAKER + NOUN announcement | system
PREP. from a/the ~ Christmas songs blared from loudspeakers. | over a/the ~ We heard the news over the loudspeaker. | through a/the ~ A woman was addressing the crowd through a loudspeaker.
You can also check other dicts: loudspeaker (English, 中文解释 ), wordnet sense, Collins Definition