A metaphorical term meaning to allow something to happen or to release control over a situation.

नियंत्रण छोड़ना

English Usage: Once the negotiations began, the floodgates of discussion opened wide.

Hindi Usage: जब बातचीत शुरू हुई, तो चर्चा के जलप्रवेश द्वार चौड़े खुल गए।