This was reflected on the file jacket of a Cook County criminal file
DUI / DWI Attorney
"Motion City - nonsuit" it is a voluntary dismissal by the City of Chicago.
Criminal Defense Attorney
Motion state, stricken OFF the call with leave to reinstate is what the initialism stands for. The leave to reinstate part is important.
MCNS means the the city had opted not to prosecute the case. This is different than MS SOL.
Many non lawyers misinterpret these two dispositions as the same. However, the immediate effect that is the case is over lends to the confusion.
Of course every answer is based on the question asked and requires a more complete context. This answer should not be relied upon to make a legal decision. Seek the advice of an experienced attorney before acting. www.waaltd.com