Dictionary definition · plunge
noun
- a brief swim in water
- a steep and rapid fall
verb
- thrust or throw into"Immerse yourself in hot water"
- drop steeply"the stock market plunged"
- dash violently or with great speed or impetuosity"She plunged at it eagerly"
- begin with vigor"He launched into a long diatribe"
- cause to be immersed"The professor plunged his students into the study of the Italian text"
- fall abruptly"It plunged to the bottom of the well"
- immerse briefly into a liquid so as to wet, coat, or saturate"dip the garment into the cleaning solution"
- devote (oneself) fully to"He immersed himself into his studies"
Source: Open English WordNet (CC BY 4.0).