dive

1. (v) (intransitive) To swim under water. 2. (v) (intransitive) To jump into water head-first. 3. (v) (intransitive) To jump headfirst toward the ground or into another substance. 4. (v) (intransitive) To descend sharply or steeply. 5. (v) (intransitive) To lose altitude quickly by pointing downwards, as with a bird or aircraft. 6. (v) (intransitive, especially with in) To undertake with enthusiasm. 7. (v) (sports) To deliberately fall down after a challenge, imitating being fouled, in the hope of getting one's opponent penalised. 8. (v) (cricket) To leap while fielding to take a brilliant catch which usally results in a wicket and appreciation. 9. (v) (transitive) To cause to descend, dunk; to plunge something into water. 10. (v) (transitive) To explore by diving; to plunge into. 11. (v) (intransitive, figuratively) To plunge or to go deeply into any subject, question, business, etc.; to penetrate; to explore. 12. (n) A jump or plunge into water. 13. (n) A headfirst jump toward the ground or into another substance. 14. (n) A downward swooping motion. 15. (n) A swim under water. 16. (n) A decline. 17. (n) (slang) A seedy bar, nightclub, etc. 18. (n) (aviation) Aerial descent with the nose pointed down. 19. (n) (sports) A deliberate fall after a challenge. 20. (n) Obsolete form of daeva. [(Zoroastrianism) A supernatural entity of disagreeable nature, usually considered as a demon.]