atisāra : [m.] 1. overstepping; 2. dysentery.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Atisāra [fr. ati + sṛ, see atisarati. Cp. Sk. atisāra in diff. meaning but BSk. atisāra (sâtisāra) in the same meaning) going too far, overstepping the limit, trespassing, false step, slip, danger Vin i.55 (sâtisāra), 326 (id.); S i.74; M iii.237; Sn 889 (atisāraŋ diṭṭhiyo = diṭṭhigatāni Nd1 297; going beyond the proper limits of the right faith), J v.221 (dhamm˚), 379; DhA i.182; DhsA 28. See also atisara.

Pali-English Dictionary, TW Rhys Davids, William Stede,