1) Военный термин: optimum reliability and component life estimator
2) Грубое выражение: One Raging Asshole Called Larry Ellison, One Rich Asshole Called Larry Ellison
3) Сокращение: Operational Research And Critical-Link Evaluation, Optimized Reliability and Component Life Estimator, Ordnance Rapid Area Clearance, a relational database management system software package
4) Расширение файла: On-Line Inquiry and Report Generator (UNIX DB program)
Универсальный англо-русский словарь. Академик.ру. 2011.