wasband
n. A woman's ex-husband.
Etymology
Examples
1996
The bride's aunt dances with her ex-husband — he's called a 'wasband' — on the hay-strewn 'dance floor' in front of the barn.
—Abigail Trafford, “Will You Still Catch Me When I'm Sixty-Four?,” The Washington Post, September 10, 1996
1990 (earliest)
After reading here about the guy who calls his wife's ex her 'wasband,' Rosemary Wolohan confides that she refers to her two exes as 'hasbeends.'
—Herb Caen, “Plenty of Monday,” The San Francisco Chronicle, March 12, 1990
Notes
This term is a clever and euphonious blend of the words was and husband.