stürzen

1. to fall down, to drop, to tumble
2. to dash, to rush, to sprint to something
3. to drop off steeply
4. to throw, to hurl
5. to upturn
6. to overthrow, to oust, to dethrone
7. (colloquial) to plunge, to dive, to throw oneself [with auf (+ accusative) ‘into something’]