osaraṇa : [nt.] entry; meeting. || osāraṇā (f.), 1. reinstatement; 2. crowding.

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

Osaraṇa (nt.) [fr. avasarati] -- 1. return to, going into (acc.) visiting J i.154 (gāmantaŋ ˚kāle). -- 2. withdrawal, distraction, drawing or moving away, heresy Sn 538 (= ogahanāni titthāni, diṭṭhiyo ti attho SnA 434).

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