Synonyms for Polyphone:
n.
•communication (noun)polyphonic letter.
•polyphone (noun)
polyphonic letter.
Usage examples for polyphone
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A large automatic musical instrument- a 'penny in the slot' polyphone resembling a grandfather's clock in shape- stood against one of the partitions and close up to the counter, so that those behind the bar could reach to wind it up. – The Ragged Trousered Philanthropists by Robert Tressell
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The Old Dear now put a penny in the slot of the polyphone and winding it up started it playing. – The Ragged Trousered Philanthropists by Robert Tressell
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While they were pouring this down their throats, Crass took a penny from his waistcoat pocket and put it in the slot of the polyphone – The Ragged Trousered Philanthropists by Robert Tressell