diving

Concise Oxford English Dictionary © 2008 Oxford University Press:
dive/dʌɪv/

▶verb (past and past part. dived; US also dove /dəʊv/)

• 1 plunge head first into water with one's arms raised over one's head.

• 2 go to a deeper level in water.

  ■ swim under water using breathing equipment.

• 3 plunge steeply downwards through the air.

  ■ move quickly or suddenly in a downward direction or under cover.

  ■ Soccer deliberately fall when challenged in order to deceive the referee into awarding a foul.

• 4 (of prices or profits) drop suddenly.

▶noun

• 1 an act or instance of diving.

• 2 informal a disreputable nightclub or bar.

– derivatives
diving noun.

– origin OE dūfan ‘dive, sink’ and dȳfan ‘immerse’, of Gmc origin; rel. to deep and dip.