Definitions of reopen
(of the police or other investigating authority) to start investigating a case again after it has been closed, abandoned, or otherwise no longer investigated
The Prime Minister has refused to reopen investigations into corruption allegations against the president.
to change the conditions or regulations of something (eg a market) to allow something back in (eg a product or a service)
South Korea and the US had an agreement to reopen the market to beef from cattle older than 30 months once consumer confidence is rebuilt.
to open again after having been closed
The loan window for Football League clubs closed on Thursday and does not reopen until January.