[1] : The Collaborative International Dictionary of English v.0.48

rare \rare\, a. compar. rarer r^ar"~er; superl.
   rarest. cf. as. hr=er, or e. rare early. root18.
   nearly raw; partially cooked; not thoroughly cooked;
   underdone; as, rare beef or mutton.
   1913 webster

         new-laid eggs, which baucis' busy care
         turned by a gentle fire, and roasted rare. --dryden.
   1913 webster

   note: this word is in common use in the united states, but in
         england its synonym underdone is preferred.
         1913 webster
see also:
rarer rarest underdone 

[2] : WordNet (r) 2.0

underdone
     adj : insufficiently cooked syn: half-baked
see also:
half-baked 

Underdone >> U Words
Underdone, definition of term: Underdone
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