asiento
noun
asien·to
variants or assiento
ˌasēˈen(ˌ)tō,
ˌäs-
plural -s
: a contract or convention between Spain and another power or company or individual for furnishing slaves for the Spanish dominions in America
Word History
Etymology
Spanish asiento seat, meeting place of a tribunal, treaty, contract, from asentar to seat, make an agreement, from a- (from Latin ad-) + sentar to seat