from
Bouvier's Law Dictionary, Revised 6th Ed (1856)
CORRUPTION. An act done with an intent to give some advantage inconsistent
with official duty and the rights of others. It includes bribery, but is
more comprehensive; because an act may be corruptly done, though the
advantage to be derived from it be not offered by another. Merl. Rep. h.t.
2. By corruption, sometimes, is understood something against law; as, a
contract by which the borrower agreed to pay the lender usurious interest.
It is said, in such case, that it was corruptly agreed, &c.