loon (n.)

  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

    [ Syn: diver ]

  3. a person with confused ideas; incapable of serious thought

    [ Syn: addle-head , addlehead , birdbrain ]

The dictionary is based on the WordNet Electronic Lexical Database.
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