MATWEED Meaning of MATWEED in English ˈ ̷ ̷ˌ ̷ ̷ nounEtymology: mat (I)1. : any of several maritime grasses (as Ammophila arenaria, Spartina stricta and Lygeum spartum )2. : matgrass b Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012