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 (nĭp′əl-wûrt′, -wôrt′)
An annual plant (Lapsana communis) in the composite family, native to Eurasia and naturalized in North America, having small yellow flower heads.

[From its former use in folk medicine to treat breast tumors.]


(Plants) an annual Eurasian plant, Lapsana communis, with pointed oval leaves and small yellow flower heads: family Asteraceae (composites)
References in periodicals archive ?
Deadnettle Lapsana communis Nipplewort Lithospermum arvense Corn cromwell Neslia paniculata Ball mustard Persicaria lapathifolia Pale persicaria Poa annua Annual poa Poa pratensis/trivialis Meadow grass Poaceae True grasses Polygonum aviculare Knotgrass Potentilla norvegica Norwegian cinquefoil Potentilla recta Rough-fruited cinquefoil Raphanus raphanistrum Wild radish Rhinanthus sp.
It will take so long because workers must return to pluck missed vines, new growth, and secondary waves of invasive weeds, such as nipplewort and herb Robert (aka "stinky Bob"), that sprout in newly cleared areas.
Both "The Flower Master" and "Sheltered Garden" eroticize their landscapes; the students in the contemporary poem, for instance, "stroke gently the necks of daffodils/and make them throw their heads back to the sun," and collect plants with suggestive names like "sweet/sultan, dainty nipplewort.