a sudden movement in a particular direction or into a particular place:
She made a dive for the bathroom.
a sudden fall in the amount, value, or success of something:
The news put shares in a dive.
The team's fortunes have taken a dive this year.
when something moves down through the air or water:
Thankfully, the pilot managed to pull out of the dive and regain control.
a jump into deep water with your head and arms going in first
the act of going under water to swim, using special equipment to help you breathe
a bar, club etc that is cheap and dirty