PLUNGE

I. verb (~d; plunging) Etymology: Middle English, from Anglo-French ~r, from Vulgar Latin *plumbicare, from Latin plumbum lead Date: 14th century transitive verb to cause to penetrate or enter quickly and forcibly into something , to cause to enter a state or course of action usually suddenly, unexpectedly, or violently , intransitive verb to thrust or cast oneself into or as if into water, 2. to become pitched or thrown headlong or violently forward and downward, to act with reckless haste ; enter suddenly or unexpectedly , to bet or gamble heavily and recklessly, to descend or dip suddenly , II. noun Date: 15th century an act or instance of plunging ; dive