To follow up on Patrick87's answer, here are the definitions of verbiage in Merriam-Webster's Eleventh Collegiate Dictionary (2003):
1 : a profusion of words usu. of little or obscure content {such a tangled maze of evasive verbiage as a typical party platform —Marcia Davenport} 2 : manner of expressing oneself in words : DICTION {sportswriters guarded their verbiage so jealously —R. A. Sokolov}
Starting with the Seventh Collegiate (1963) and its unabridged source, Merriam-Webster's Third New International Dictionary (1961), Merriam-Webster has taken a descriptivist-friendly approach to defining the words it covers, meaning that the presence of definition 2 of verbiage above reflects a significant level of U.S. English usage in everyday speech and writing. But for how far back have Webster's Collegiates reported this second meaning?
The answer is, Since the Seventh Collegiate. The Sixth Collegiate (originally published in 1949, though I have a copy bearing the publication year 1960), which is based on the more prescriptivist-friendly New International Dictionary, Second Edition (1934) offers only this definition:
verbiage n. [F. See VERB.] Use of many words without necessity, or with little sense; verbosity; wordiness.
Then comes the Seventh Collegiate (1963):
verbiage n [F, fr. MF verbier to chatter, fr. verbe speech, fr. L verbum word] 1 : superfluity of words in proportion to sense or content: WORDINESS 2 : DICTION, WORDING {concise military verbiage}
Webster's Dictionary of English Usage (1989) goes to some pains to validate the second definition of verbiage. After noting that the "wordiness" definition was the word's original meaning in English, WDEU offers the following analysis:
Verbiage has also been used since the early 19th century as a synonym for wording or diction:
The language of the dialogue is as familiar as the verbiage of the parlour fireside —The New British Theatre, 1814 (OED)
In musical verbiage a phrase is a portion of a melody that is performed without a pause —Albert E. Weir, 1940
... the kid-glove verbiage of diplomacy —Frank Abbott Magruder, National Government and International Relations, 1950
Such usage is treated as standard in the OED and in many current dictionaries, including our own, but some people continue to regard it as an error, insisting that verbiage should always imply excess. Those same people are also likely to find fault with such phrase as excess verbiage and excessive verbiage, in which they detect redundancy. The evidence shows, however, that the meaning of is often underscored in standard writing by an appropriate adjective: [examples omitted]
Half a century after the arrival of the Seventh Collegiate, verbiage in the sense of diction shows no signs of going away—at least not in the United States. For example, from Rachel Sherman, Class Acts: Service and Inequality in Luxury Hotels (2007):
Using engineered recognition, [Luxury Garden] workers consistently noted and respected guest preferences and frequently anticipated their needs. They were cordial but not overly friendly or familiar, as a rule, though some had developed relationships with frequent guests. Workers generally used what managers called “proper verbiage” rather than informal talk, which preserved distance.
Readers and hearers should probably expect to see verbiage used in its "diction" sense at times. But writers and speakers who don't want to be misunderstood by audiences that are more (or perhaps exclusively) familiar with the more common "wordiness" sense of the word might do well to adopt a less ambiguous term such as diction or wording if their intentions that way tend.
