Medicago me·di·cago uncommon noun 1. a genus of herbs that resemble clover Synonymsgenus Medicago Related words Word family Medicago arboreaMedicago echinusMedicago falcataMedicago intertextaMedicago lupulinaMedicago sativa Broader terms rosid dicot genusPapilionoideae Part of medic WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.