An Etymological Dictionary of Astronomy and Astrophysics

Any of various plants of the genus Trifolium with three round, green leaves that are joined together. Clovers occasionally have leaves with four leaflets, instead of the usual three.

Etymology (EN): M.E. clovere; O.E. clafre; cf. M.L.G. klever, M.Du. claver, Du. klaver, O.S. kle, O.H.G. kleo, Ger. Klee “clover,” of uncertain origin.

Etymology (PE): Šabdar, of unknown origin.