ACHIE'VEMENT, noun 1. The performance of an action. 2. A great or heroic deed; something accomplished by valor, or boldness. 3. An obtaining by exertion. 4. An escutcheon or ensigns armorial, granted for the performance of a great or honorable action.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI