masterpiece
n. countablen. a work of art, such as a painting or book, that is made with great skill. You use this to describe the very best thing an artist or creator has ever produced.
n. a work of outstanding artistry, skill, or workmanship; the greatest achievement of an artist's career.
The artist's latest painting is a true masterpiece.
Critics consider the director's third film to be a masterpiece of modern cinema.
While the museum houses many significant works, this specific masterpiece remains the primary draw for visitors due to its revolutionary use of light and shadow.
From master + piece, a calque of Dutch meesterstuk or German Meisterstück (“masterpiece”). Piecewise doublet of maestropiece and masterstick. Compare also journeyman's piece.
Often used with the preposition 'of' to specify the field or creator.