Arse \Arse\, n. [AS. ears; [ae]rs; akin to OHG. ars. G. arsch, D. aars, Sw. ars, Dan. arts, Gr. ? (cf. ? tail).]

The buttocks, or hind part of an animal; the posteriors; the fundament; the bottom.

Source: Webster's Revised Unabridged Dictionary (1913)