diver

noun

1. Someone who dives, especially as a sport.

   “A passerby noticed the man's body protruding from the water at about 9 p.m. and Boston and Metropolitan police divers were called to the scene.”

2. Someone who works underwater; a frogman.
3. (Ireland, UK)loon (Gavia)
4. The New Zealand sand diver.
5. The long-finned sand diver.
6. (London, dated)A passenger carrying vehicle using an underground route; specially, a diver tram, one using the former Kingsway tramway subway (1906-1952).
7. (obsolete, slang)A pickpocket.
8. A competitor in certain sports who is known to regularly imitate being fouled, with the purpose of getting his/her opponent penalised.