Dictionary Definition:
Rakkhana (nt.) [fr. rakkh] 1. keeping, protection, guarding Nett 41; Mhvs 35, 72 (rahassa˚ -- atthāya so that he should keep the secret); PvA 7. -- 2. observance, keeping VvA 71 (uposatha -- sīla˚); PvA 102 (sīla˚), 210 (uposatha˚).