Speaker :: Speaker (n.) One who utters or pronounces a discourse; usually, one who utters a speech in public; as, the man is a good speaker, or a bad speaker..
Speaker :: Speaker (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 :: Speaker (n.) A book of selections for declamation.
Speakership :: Speakership (n.) The office of speaker; as, the speakership of the House of Representatives..