WordNet (r) 3.0 (2006):

Wb
    n 1: a unit of magnetic flux equal to 100,000,000 maxwells [syn:
         weber, Wb]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

WB
       WorkBench (Amiga, Commodore)


The Free On-line Dictionary of Computing (30 December 2018):

wb

    Welcome Back.