lemon mint le·mon·mint uncommon noun 1. an annual horsemint of central and western United States and northern Mexico Synonymslemon minthorsemintMonarda citriodora 2. mint with leaves having perfume like that of the bergamot orange Synonymsbergamot mintlemon minteau de cologne mintMentha citrata Related words Broader terms mintmonarda WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.