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Noun: loon  loon
  1. A worthless lazy fellow
     
  2. Large somewhat primitive fish-eating diving bird of the northern hemisphere having webbed feet placed far back; related to the grebes
    - diver
     
  3. A person with confused ideas; incapable of serious thought
    - addle-head, addlehead, birdbrain

Sounds like:

Derived forms: loons

Type of: bum [N. Amer], do-nothing, gaviiform seabird, idler, layabout, loafer, misfit

Part of: Gavia, genus Gavia

Encyclopedia: Loon, Iran