köken: From Proto-Finnic *häici (“flower, inflorescence”) (compare Estonian õis (“flower”)), borrowed from Proto-Baltic [Term?] (compare Lithuanian žiedas). The words heitiä and hedelmä (“fruit”) are derived from the same Proto-Finnic root. The modern meaning "viburnum" is a backformation from heisipuu.
köken: Unknown, possibly Etruscan. Compare laburnum, alaternus, basterna, lacerna, santerna, pincerna, clarnus, all strongly suspected to be from Etruscan or a related language, although the sound sequence also occurs in words trusted to be native like sturnus, spinturnīx, cōturnīx. Note also the suffix -urnus.