1. One that flanks, especially a soldier so positioned as to protect the flank of a column of troops on the march.
2. Business An extension product, such as a diet version of a soft drink or a liquid version of a detergent, added to a line to support the sales of the main product.
3. Football A flankerback.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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