B-sider

From B-side +‎ -er.

B-sider (plural B-siders)

1. A song released as a B-side.
   • 2000, Kurt Wolff, Orla Duane, Country Music: The Rough Guide, page 314:

     […] a full-throttled B-sider about a trucker fighting bad weather and windy roads to get to his favorite truck stop and waitress.

• Brides, biders, birdes, brides, debris, débris, rebids, sibred