genus Picris ge·nus·pic·ris uncommon noun 1. genus of weedy Old World yellow-flowered herbs usually containing a bitter-tasting substance: bitterweed SynonymsPicrisgenus Picris Related words Broader terms asterid dicot genus Parts Compositae Part of oxtongue WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.