noun
: a tall perennial European herb ( Euphorbia esula ) naturalized and troublesome as a weed in the northern United States and Canada and having persistent rootstocks and linear to narrowly oblong leaves
noun
: a tall perennial European herb ( Euphorbia esula ) naturalized and troublesome as a weed in the northern United States and Canada and having persistent rootstocks and linear to narrowly oblong leaves
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012