1. A broad city street, often tree-lined and landscaped.
2. Upper Midwest. See parking (sense 3). See Regional Note at parking.
3. Chiefly Midwestern U.S. See median strip. See Regional Note at neutral ground.

[French, from Old French bollevart, rampart converted to a promenade, from Middle Dutch bolwerc, bulwark. See bulwark.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.