One who converses.
One who speaks.
Speakerphone.
The literary character uttering the lyrics of a poem or song, as opposed to the author writing the words of that character.
The producer of a given utterance, whether speech or text.
The chair or presiding officer of certain legislative bodies, such as the U.K. House of Commons or the U.S. House of Representatives.
A book containing passages of text for use in speeches.
A key on a woodwind instrument of the clarinet family (cf octave key on other instruments) which induces the instrument to overblow.
One who makes a speech to an audience.
Loudspeaker.