| Noun | 1. | plantain family - cosmopolitan family of small herbs and a few shrubs; most are troublesome weedsdicot family, magnoliopsid family - family of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination order Plantaginales, Plantaginales - coextensive with the family Plantaginaceae genus Plantago, Plantago - type genus of the family Plantaginaceae; large cosmopolitan genus of mostly small herbs |