Mart Brothers
n.pl.— «Some in my own profession call them “The Mart Brothers,” for Wal-Mart and Kmart; others with more balance call them “The Great Discounters.”» —“Big Box Debate Finally Comes to Town” by Jon F. Weinstein Port Washington News (Nassau County, N.Y.) Aug. 26, 2005. (source: Double-Tongued Dictionary)