Obs. [OE. ácweorna, later ácwern, cogn. w. OHG. and mod.G. eichhorn, LG. êker-ken, MDu. êncoren, Du. eekhoren, eikhoren, inkhoren, ON. îkorni. Of unknown origin; in OE. and some other langs. the first syllable is identified with oak.] A squirrel.
a. 800. Oldest Eng. Gl. (Sw.), Epinal, 911, aqueorna; Erfurt, aquorna; Leiden, 236, acurna; Cotton, 1811, aqueorna.
c. 1000. Ælfric, Gl. (Wr. 22/2), Scirra, aquilinus, sciurus, acwern.
c. 1200. Moral Ode, 363. Ne aquerne ne metheschele [v.r. ocquerne ne martres cheole] ne beuer ne sabeline.