speaker

speaker
    n 1: someone who expresses in language; someone who talks
         (especially someone who delivers a public speech or someone
         especially garrulous); "the speaker at commencement"; "an
         utterer of useful maxims" [syn: {speaker}, {talker},
         {utterer}, {verbalizer}, {verbaliser}]
    2: electro-acoustic transducer that converts electrical signals
       into sounds loud enough to be heard at a distance [syn:
       {loudspeaker}, {speaker}, {speaker unit}, {loudspeaker
       system}, {speaker system}]
    3: the presiding officer of a deliberative assembly; "the leader
       of the majority party is the Speaker of the House of
       Representatives"
    

Speaker \Speak"er\, n.
   1. One who speaks. Specifically:
      (a) 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.
      (b) 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.
          [1913 Webster]

   2. A book of selections for declamation. [U. S.]
      [1913 Webster]
    

speaker

   1. <hardware> {loudspeaker}.

   2. The person who is (assumed to be) talking.

   (1996-12-01)
    

71 Moby Thesaurus words for "speaker":
      acoustical network, capacitor speaker, chair, chairman, chatterbox,
      coaxial speaker, cone, convener, conversationalist,
      crossover network, debater, declaimer, demagogue, diaphragm,
      dynamic speaker, earphone, electrodynamic speaker,
      electromagnetic speaker, electrostatic speaker,
      excited-field speaker, full-fidelity speaker, haranguer, headphone,
      headset, herald, high-fidelity speaker, high-frequency speaker,
      horn, jawsmith, keynoter, lecturer, loudspeaker,
      low-frequency speaker, midrange speaker, monorange speaker, mouth,
      mouthpiece, moving-coil speaker, official spokesman, orator,
      panelist, patterer, permanent magnet speaker, presiding officer,
      prolocutor, prolocutress, prolocutrix, public speaker,
      rabble-rouser, ranter, rapporteur, reporter, sayer, speaker system,
      speaker unit, speecher, speechifier, speechmaker, spieler,
      spokesman, spokesperson, spokeswoman, spouter, talker,
      triaxial speaker, tub-thumper, tweeter, utterer, voice, voice coil,
      woofer