noun

• 1Yellow-wort, a Eurasian plant with glaucous perfoliate leaves and yellow flowers with six to eight petals, Blackstonia perfoliata (family Gentianaceae), typically found on shallow chalky soils (now rare).

• 2(Also "slender yellow centaury") a small Eurasian herbaceous plant with narrow leaves and solitary yellow flowers, Cicendia filiformis (family Gentianaceae), typically found in damp heathland; also called marsh centaury.