(idiomatic) To start a new endeavor enthusiastically and wholeheartedly, though possibly without experience.

simple past tense and past participle of plunge into

A partial synonym of plunge in.

A (very) low-cut neckline, found on some dresses and other garments.

plural of plunging neckline

(idiomatic) To begin any major commitment. / (idiomatic) To get engaged to be married.

plural of plunge waterfall

A punch bowl waterfall.

A brassiere with a low midsection, designed to be worn with low-cut clothing.

A pool that is small in diameter, but deep, usually resulting from erosion by a natural force such as a waterfall or rapids.