1 ÝSA
u, f. [Ivar Aasen hysa; but the long vowel is attested by the Icel. pronunciation, as also by the alliteration in Fms. vi, see below]:—a haddock, Edda (Gl.); ófúsa dró ek ýsu, átta ek föng við löngu, Fms. vi. (in a verse); very freq. in mod. usage.