Definition from macmillandictionary.com
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It was still dark when the helicopter plunged 500 feet into the sea.
His car had plunged off the mountain road in heavy rain.
The wind suddenly shifted and they were both plunged off the cliff.
Stone steps plunged down to the basement.
The temperature is expected to plunge below zero degrees overnight.
He plunged towards the door and wrenched it open.
A string of recent defeats has plunged the team dangerously near the bottom of the table.