That which is imposed or levied; a tax, tribute, or duty; especially, a duty or tax laid by goverment on goods imported into a country. Even the ship money . . . Johnson could not pronounce to have been an unconstitutional impost. Macaulay.
The top member of a pillar, pier, wall, etc., upon which the weight of an arch rests.
98,828 entries. Headwords are matched first, then definition text.