(n.) One who is the mouthpiece of others; especially, one who presides over, or speaks for, a delibrative assembly, preserving order and regulating the debates; as, the Speaker of the House of Commons, originally, the mouthpiece of the House to address the king; the Speaker of a House of Representatives.
SPEAKER
Meaning of SPEAKER in English
Webster's English dictionary. Английский словарь Webster. 2012