Pronunciation: (loud'spē"kur), [key]
1. any of various devices, usually electronic, by which speech, music, etc., can be intensified and made audible throughout a room, hall, or the like.
a. a device for transforming electric signals into audible sound, most frequently used to reproduce speech and music.
b. speaker (def. 4).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.