diver

Definitions

1. 1.Fig.: One who goes deeply into a subject, study, or business. "A diver into causes." Sir H. Wotton.
2. 2.(Zoöl.) Any bird of certain genera, as Urinator (formerly Colymbus), or the allied genus Colymbus, or Podiceps, remarkable for their agility in diving. Note: The northern diver (Urinator imber) is the loon; the black diver or velvet scoter (Oidemia fusca) is a sea duck. See Loon, and Scoter.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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