cubit Mil.85 (aṭṭha rataniyo).

Sk. aratni “elbow” with apocope and diaeresis; given at Halāyudha 2, 381 as “a cubit, or measure from the elbow to the tip of the little finger.” The form ratni also occurs in Sk. The etym. is fr. Idg *ole (to bend), cp. Av. arəpna elbow; Sk. arāla bent of which enlarged bases *olen in Lat. ulna, ond *oleq in Lat. lacertus, Sk. lakutaḥ = P. laguḷa. See cognates in Walde, Lat. Wtb. s. v. lacertus