aratniH ( m. or f. ) [ f-katni ratniH sa nAsti yatra ] 1 The elbow; sometimes the fist itself. 2 A cubit of the middle length, from the elbow to the tip of the little finger, an ell; aratnistu nizkanizWena muzwinA Ak. ; maDyAMgulIkUrparayormaDye prAmARikaH karaH . badDamuzwikaro ratniraratniH sakanizWikaH .. Halāy. ; Ki. 18. 6. 3 The arm.