English to English
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
2. electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
3. the presiding officer of a deliberative assembly
the leader of the majority party is the Speaker of the House of Representatives
4. One who speaks.