nomine poenae (nahm-<<schwa>>-nee pee-nee), n.[Latin “in the name of penalty”] 1.Civil law. A clause in a testament requiring the heir to do something by way of penalty. 2. At common law, a penalty for nonperformance, such as additional rent to be paid by a tenant to a landlord for failing to perform certain conditions in a lease.

[Blacks Law 8th]