moiety (moy-<<schwa>>-tee).1. A half of something (such as an estate). — Also termed mediety. 2. A portion less than half; a small segment. 3. In federal customs law, a payment made to an informant who assists in the seizure of contraband, the payment being no more than 25% of the contraband’s net value (up to a maximum of $250,000).19 USCA § 1619.

[Blacks Law 8th]