Pronunciation: (tes'tun, -ton, te-stOOn'),[key] —n. 1. a former silver coin of France, equal at various times to between 10 and 14½ sols, bearing on the obverse a bust of the reigning king.
2. a former silver coin of England, issued by Henry VII, Henry VIII, and Edward VI, and bearing on the obverse the bust of the reigning king: equal originally to 12 pence, later to sixpence.
3. Also,tes•to•nePronunciation: (te-stō'nā).[key]a former silver coin of Milan, first issued in 1468, bearing on the obverse a bust of the Duke of Milan. Also,tes•toonPronunciation: (te-stOOn').[key]