TheAshanti traded with the tribes to the north and with coastal folk to the south, and caravans going in either direction were liable forimposts according to the nature of the goods they carried.
2002,Colin Jones,The Great Nation, Penguin, published2003, page56:
New universal direct taxes had to be introduced[…], while the burden of indirect taxes was also made heavier, with newimposts being levied on an ensemble of items ranging from playing cards to wigs.
1798,William Gilpin,Observations on the Western Parts of England[3], London: T. Cadell jun. and W. Davies, Section 7, p. 79:
The outer circle [ofStonehenge] has been formed by a combination of two uprights and animpost; yet each combination of these three stones is detached, and without any connection with the rest, except that of coinciding in the form of a circle.
(architecture)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)