Source : Webster's Revised Unabridged Dictionary (1913)

Ern \Ern\, Erne \Erne\, n. [AS. earn eagle; akin to D. arend,
   OHG. aro, G. aar, Icel., Sw., & Dan. ["o]rn, Goth. ara, and
   to Gr. ? bird. ???. Cf. {Ornithology}.] (Zo["o]l.)
   A sea eagle, esp. the European white-tailed sea eagle
   ({Hali[ae]etus albicilla}).