To plunge headfirst into water.

To drop down quickly.

तेजी से गिरना

English Usage: The stock price started diving after the announcement.

Hindi Usage: घोषणा के बाद शेयर की कीमत तेजी से गिरने लगी।

The act of plunging into water.

पानी में छलांग लगाना

English Usage: The diving competition was thrilling.

Hindi Usage: डाइविंग प्रतियोगिता रोमांचक थी।