something accomplished, esp. by superior ability, special effort, great courage, etc.; a great or heroic deed: his remarkable achievements in art.
2.
act of achieving; attainment or accomplishment: the achievement of one's object.
3.
Heraldry. the full display of the armorial bearings of an individual or corporation.
[Origin: 1425–75; late ME < MF achevement conclusion. See achieve, -ment]
—Synonyms 1.Achievement,exploit,feat are terms for a noteworthy act. Achievement connotes final accomplishment of something noteworthy, after much effort and often in spite of obstacles and discouragements: a scientific achievement. Exploit connotes boldness, bravery, and usually ingenuity: the famous exploit of an aviator. Feat connotes the performance of something difficult, generally demanding skill and strength: a feat of horsemanship. 2. fulfillment, realization.
A*chieve"ment\ (-ment), n. [Cf. F. ach[`e]vement, 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.