The Collaborative International Dictionary of English v.0.48:

Spurious \Spu"ri*ous\ (sp[=u]"r[i^]*[u^]s), a. [L. spurius.]
   1. Not proceeding from the true source, or from the source
      pretended; not genuine; counterfeit; false; adulterate.
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   2. Not legitimate; bastard; as, spurious issue. "Her spurious
      firstborn." --Milton.
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   Spurious primary, or Spurious quill (Zool.), the first,
      or outer, primary quill when rudimentary or much reduced
      in size, as in certain singing birds.

   Spurious wing (Zool.), the bastard wing, or alula.
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   Syn: Counterfeit; false; adulterate; supposititious;
        fictitious; bastard.
        [1913 Webster] -- Spu"ri*ous*ly, adv. --
        Spu"ri*ous*ness, n.
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