tron

/T R AA1 N/
noun
  1. 1

    A small drain.

noun
  1. 1

    A steelyard.

  2. 2

    A form of weighing machine for heavy wares, consisting of two horizontal bars crossing each other, beaked at the extremities, and supported by a wooden pillar.

Source: https://en.wiktionary.org/wiki/tron, https://en.wiktionary.org/wiki/trone