Dictionary entry

Rearmouse

Webster's Dictionary 1913

{ Rear″mouse′, Rere″mouse′ (–mous′) }, n. [AS. hrēremūs; probably fr. hrēran to agitate, stir (akin to G. rühren, Icel. hræra) + mūs mouse.] (Zoöl.) The leather-winged bat (Vespertilio murinus). [Written also reermouse.]