1.a brief swim in water
2.a steep and rapid fall
1.thrust or throw into;
Immerse yourself in hot water
2.drop steeply;
the stock market plunged
3.dash violently or with great speed or impetuosity;
She plunged at it eagerly
4.begin with vigor;
He launched into a long diatribe
5.cause to be immersed;
The professor plunged his students into the study of the Italian text
6.fall abruptly;
It plunged to the bottom of the well
7.immerse briefly into a liquid so as to wet, coat, or saturate;
dip the garment into the cleaning solution
8.engross (oneself) fully;
He immersed himself into his studies