Definition of opus:
while, division of labor, make-up, literature, product, make, part, piece, words, call, theme, business, slice, paper, physical composition, concerto, air, canon, number, chorus, writing, typography, artwork, publication, adagio, objet d'art, patch, penning, cantata, report, title, piece of music, man, composing, work, constitution, authorship, allegro, collaboration, firearm, calling, chant, production, creation, assemblage, musical composition, work, bit, volume, arrangement, career, appointment, bass, spell, makeup, art, art object, fine art, background, delegation, back catalog, andante, small-arm, music, chef d'oeuvre, composition.
- "The Works of the Right Honourable Edmund Burke, Vol. VI. (of 12)", Edmund Burke.
- "The Lion and the Mouse A Story of an American Life", Charles Klein.
- "Chopin: The Man and His Music", James Huneker.