Definitions of speaker:

  • noun:   someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)
    Example: "The speaker at commencement"
  • noun:   the presiding officer of a deliberative assembly
    Example: "The leader of the majority party is the Speaker of the House of Representatives"
  • noun:   electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
  • name:  A surname (very rare: popularity rank in the U.S.: #19415)