imposts

/IH0 M P OW0 S T S/
noun
  1. 1

    A tax, tariff or duty that is imposed, especially on merchandise.

  2. 2

    The weight that must be carried by a horse in a race, the handicap.

noun
  1. 1

    The top part of a column, pillar, pier, wall, etc. that supports an arch.

Source: https://en.wiktionary.org/wiki/impost, https://en.wiktionary.org/wiki/imposts