† ˈcrowsoapObs. [Cf. crow n. 10.] The plant Soapwort, Saponaria officinalis; also applied to some species of Lychnis. a1387Sinon. Barthol. (Anecd.Oxon.) 37 Saponaria, crowsope.1578Lyte Dodoens ii. x. 159 The wilde Campions are called..of some Crowesope.