Definition of trones:
(n) :
(New Zealand, informal) Hamilton, a city in the North Island of New Zealand.
(n) :
Obsolete form of trone (“weighing machine”). [(UK, dialect, Scotland, obsolete or historical) A type of steelyard (weighing machine) for heavy wares, such as wool, consisting of two horizontal bars crossing each other, beaked at the extremities, and supported by a wooden pillar.]