n. (Bot.) A slender European weed (Galium Cruciata); -- called also crossweed. [ 1913 Webster ]
n. (Bot.) A common American composite weed (Ambrosia artemisiaefolia) with finely divided leaves; hogweed. [ 1913 Webster ]
Great ragweed, a coarse American herb (Ambrosia trifida), with rough three-lobed opposite leaves. [ 1913 Webster ]