Entry 2 senses · 2 variants Webster, 1913 Ern /ûrn/ · IPA /ɝn/ n. v. i. 01 n. A sea eagle, esp. the European white-tailed sea eagle (Haliæetus albicilla). 1. A sea eagle, esp. the European white-tailed sea eagle (Haliæetus albicilla).(Zoöl.) 02 v. i. To stir with strong emotion; to grieve; to mourn. [Corrupted into yearn in modern editions of Shakespeare.] 1. To stir with strong emotion; to grieve; to mourn. [Corrupted into yearn in modern editions of Shakespeare.][Obs.]