Hackneyed Definition & Meaning - Merriam-Webster The noun "hackney," in any case, refers to a horse suitable for ordinary riding or driving-as opposed to one used as a draft animal or a war charger. When "hackney" was first used as a verb in the late 16th century, it often meant "to make common or frequent use of." Later, it meant "to make trite, vulgar, or commonplace."