Hackney \Hack"ney\, v. t. [imp. & p. p. {Hackneyed} (-n[i^]d); p. pr. & vb. n. {Hackneying}.] 1. To devote to common or frequent use, as a horse or carriage; to wear out in common service; to make trite or commonplace; as, a hackneyed metaphor or quotation. [1913 Webster] Had I so lavish of my presence been, So common-hackneyed in the eyes of men. --Shak. [1913 Webster] 2. To carry in a hackney coach. --Cowper. [1913 Webster]