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a. A piece of cloth attached to a staff and used as a standard by a monarch, military commander, or knight.
b. The flag of a nation, state, or army.
2. A piece of cloth bearing a motto or legend, as of a club.
a. A headline spanning the width of a newspaper page.
b. A rectangular space with text or graphics, especially an advertisement, running across the top of a webpage or other online document.
4. Botany See standard.
Unusually good; outstanding: a banner year for the company.
tr.v. ban·nered, ban·ner·ing, ban·ners
1. To supply with banners.
2. To give a banner headline to (a story or item) in a newspaper.

[Middle English banere, from Old French baniere, from Vulgar Latin *bandāria, from Late Latin bandum, of Germanic origin; see bhā- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.