Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun impost

2 senses of impost

Sense 1
customs, customs duty, custom, impost -- (money collected under a tariff)
       => duty, tariff -- (a government tax on imports or exports; "they signed a treaty to lower duties on trade between their countries")

Sense 2
springer, impost -- (the lowest stone in an arch -- from which it springs)
       => stone -- (building material consisting of a piece of rock hewn in a definite shape for a special purpose; "he wanted a special stone to mark the site")

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