ଅର୍ଥ : Something that restrains a flood or outpouring.
ଉଦାହରଣ :
Suspension of surveillance opened the floodgates to illegal immigrants.
ଅର୍ଥ : Regulator consisting of a valve or gate that controls the rate of water flow through a sluice.
ସମକକ୍ଷ : head gate, penstock, sluice valve, sluicegate, water gate