| Speaker (n.) One who speaks. |
| Speaker (n.) One who utters or pronounces a discourse |
| Speaker (n.) One who is the mouthpiece of others |
| Speaker (n.) A book of selections for declamation. |
| loudspeaker / speaker / speaker unit / loudspeaker system / speaker system electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance |
| squawk box / squawker / intercom speaker the loudspeaker on an intercom or public address system |
| speaker identification / talker identification identification of a person from the sound of their voice |
| orator / speechmaker / rhetorician / public speaker / speechifier a person who delivers a speech or oration |
| salutatorian / salutatory speaker a graduating student with the second highest academic rank, may deliver the opening address at graduation exercises |
| speaker / talker / utterer / verbalizer / verbaliser 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" |
| native speaker a speaker of a particular language who has spoken that language since earliest childhood, "native speakers of French" |
| Speaker the presiding officer of a deliberative assembly, "the leader of the majority party is the Speaker of the House of Representatives" |
| valedictorian / valedictory speaker the student with the best grades who usually delivers the valedictory address at commencement |