Cold sore

from WordNet (r) 3.0 (2006)
cold sore
    n 1: caused by herpes simplex virus type 1 (HSV-1) [syn: {oral
         herpes}, {herpes labialis}, {cold sore}, {fever blister}]
    
from The Collaborative International Dictionary of English v.0.48
Cold \Cold\, n.
   1. The relative absence of heat or warmth.
      [1913 Webster]

   2. The sensation produced by the escape of heat; chilliness
      or chillness.
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            When she saw her lord prepared to part,
            A deadly cold ran shivering to her heart. --Dryden.
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   3. (Med.) A morbid state of the animal system produced by
      exposure to cold or dampness; a catarrh.
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   {Cold sore} (Med.), a vesicular eruption appearing about the
      mouth as the result of a cold, or in the course of any
      disease attended with fever.

   {To leave one out in the cold}, to overlook or neglect him.
      [Colloq.]
      [1913 Webster]
    

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