crosswort noun3 •A perennial plant, Cruciata laevipes, family Rubiaceae, of Europe and western Asia; smooth bedstraw.One cure for a headache involved binding the stalk of the herb crosswort to the head with a red bandana[.] — 1999 •The plant Phuopsis stylosa, of western Europe and Britian, often grown as a garden ornamental. •Lysimachia quadrifolia, a herbaceous plant in the family Primulaceae, native to North America. formscrossworts