hardhead

  1. Noun.  A practical person; someone hardheaded.
  2. Noun.   brown diving duck, ''Aythya australis'', native to Australia.
  3. Noun.  ny of various freshwater cyprinid fishes of the genus ''Mylopharodon'', or of saltwater sciaenid (Sciaenidae) fishes.
  4. Noun.  ny of several weeds in or formerly classified in the genus ''Centaurea'', particularly russian knapweed (''Acroptilon repens'').
  5. Noun.  (metallurgy) Residual ore that failed to melt during a smelting process.

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This entry was last updated on RefTopia from its source on 3/20/2012.