A machine that addresses.
A person who addresses (applies an address to an object to be delivered to a particular location).
A person who addresses someone (directs spoken or written communication toward someone).
A person who gives an address or speech.
An electronic voice-amplification apparatus, usually containing a set of two loudspeakers and a central control unit, used for singing, giving a speech, play-by-play commentary at events, or broadcasting in public areas like in airports or stations.