Cow parsley \Cow" pars`ley\ (kou` p?rs`l?). (Bot.) An umbelliferous plant of the genus {Ch[ae]rophyllum} ({C. temulum} and {C. sylvestre}).
cow parsley n : coarse erect biennial Old World herb introduced as a weed in eastern North America [syn: {wild chervil}, {Anthriscus sylvestris}]