1. Verb
To plunge into water head foremost; to thrust the body under, or deeply into, water or other fluid.
2. Verb
Fig.: To plunge or to go deeply into any subject, question, business, etc.; to penetrate; to explore.
3. Verb
To plunge (a person or thing) into water; to dip; to duck.
4. Verb
To explore by diving; to plunge into.
5. Noun
A plunge headforemost into water, the act of one who dives, literally or figuratively.
6. Noun
A place of low resort.
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