Diver /(?)/

Div·er

Diver

n.
  1. One who, or that which, dives.
    Divers and fishers for pearls.
  2. Fig.: One who goes deeply into a subject, study, or business.
  3. Any bird of certain genera, as Urinator (formerly Colymbus), or the allied genus Colymbus, or Podiceps, remarkable for their agility in diving. (Zool.)