What is the meaning of Impost?
A tax, tariff or duty that is imposed, especially on merchandise.
The weight that must be carried by a horse in a race, the handicap.
The top part of a column, pillar, pier, wall, etc. that supports an arch.
impost, impost block (projecting block resting on top of a column or embedded in a wall, serving as the base for the springer or lowest voussoir of an arch)
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