معنی کلمه :‌ plunge

To baptize by immersion.

The bedbug. [Obs.] Wright.

To entangle; to embarrass; to overcome.

Heavy and reckless betting in horse racing; hazardous speculation.

To pitch or throw one's self headlong or violently forward, as a horse does.

Hence, a desperate hazard or act; a state of being submerged or overwhelmed with difficulties.