pineweed n 1: annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowers [syn: {orange grass}, {nitweed}, {pineweed}, {pine-weed}, {Hypericum gentianoides}]
Pineweed \Pine"weed`\, n. (Bot.) A low, bushy, nearly leafless herb ({Hypericum Sarothra}), common in sandy soil in the Eastern United States. [1913 Webster]