viðrini

n. [an obscene word, not recorded in old writers, but etymologically remarkable, not being related to the prep. við, but akin to A. S. wræne = libidinosus; the preservation of the initial v by turning it into ‘við’ is similar to vágrek, q. v.]:—an impotent person, viðrinis-legr, adj. impotent, and metaph. false, spurious.