achievementn.[Cf. F. achvement, E. Hatchment.]1. The act of achieving or performing; an obtaining by exertion; successful performance; accomplishment; as, the achievement of his object.()2. A great or heroic deed; something accomplished by valor, boldness, or praiseworthy exertion; a feat.()[The exploits] of the ancient saints . . . do far surpass the most famous achievements of pagan heroes. (Barrow.)The highest achievements of the human intellect. (Macaulay.)3. (Her.) An escutcheon or ensign armorial; now generally applied to the funeral shield commonly called hatchment.(Cussans.)