workstream noun1 •A stream (succession) of work done on some common theme, whether by a single team or workgroup or by various ones working in a crossfunctional or multidisciplinary effort.Northern Rock had already cracked by the time RBS bought ABN Amro, pointed out one MP. McKillop protested that "15 workstreams" at RBS were saying the numbers on the deal still made sense — 2009 formsworkstreams