speaker has definitions from the fields of physics,politics
1
[ noun ] someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous)

Examples

"the speaker at commencement" "an utterer of useful maxims"

Used in print

(The Atlanta Constitution...)

State_Party_Chairman_James_W._Dorsey added that enthusiasm was picking_up for a state rally to be held Sept. 8 in Savannah at which newly elected Texas Sen._John_Tower will be the featured speaker .

(The New York Times,...)

The principal speaker will be Senator_Stuart_Symington , Democrat of Missouri .

(St. Louis Post-Dispatch,...)

Speakers at a Tipoff_Club dinner dealt lavish praise to a group of St._Louis_University players who , in the words of Coach_John_Benington , `` had more confidence in themselves than I did '' .

(The Christian Science Monitor,...)

Directionality is greatly exaggerated most_of the time ; but when the sounds of the two speakers are allowed to mix , there is excellent depth and dimension to the music .

(John Michael Ray, "Rhode Island's Reactions...)

The first speaker was Amos_C._Barstow who had been unanimously chosen president of the meeting .

2
[ noun ] (physics) electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

Used in print

(The Christian Science Monitor,...)

You will need a stereo music system , with speakers preferably placed at_least seven or eight feet apart , and one or more of the new London `` Phase 4 '' records .

(Whit Masterson, Evil Come, Evil Go....)

`` I want you to have the speakers taken_out '' .

3
[ noun ] (politics) the presiding officer of a deliberative assembly

Examples

"the leader of the majority party is the Speaker of the House of Representatives"

Used in print

(The Dallas Morning News,...)

Under Formby 's plan , an appointee would be selected by a board composed of the governor , lieutenant_governor , speaker of the House , attorney_general and chief_justice of the Texas_Supreme_Court .

Related terms

presiding_officer

4
[ noun ] Last name, frequency rank in the U.S. is 19415
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