The Collaborative International Dictionary of English v.0.48:

Sore \Sore\, a. [Compar. Sorer; superl. Sorest.] [OE. sor,
   sar, AS. s[=a]r; akin to D. zeer, OS. & OHG. s?r, G. sehr
   very, Icel. s[=a]rr, Sw. s[*a]r, Goth. sair pain. Cf.
   Sorry.]
   1. Tender to the touch; susceptible of pain from pressure;
      inflamed; painful; -- said of the body or its parts; as, a
      sore hand.
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   2. Fig.: Sensitive; tender; easily pained, grieved, or vexed;
      very susceptible of irritation.
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            Malice and hatred are very fretting and vexatious,
            and apt to make our minds sore and uneasy.
                                                  --Tillotson.
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   3. Severe; afflictive; distressing; as, a sore disease; sore
      evil or calamity. --Shak.
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   4. Criminal; wrong; evil. [Obs.] --Shak.
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   Sore throat (Med.), inflammation of the throat and tonsils;
      pharyngitis. See Cynanche.

   Malignant sore throat, Ulcerated sore throat or Putrid
   sore throat. See Angina, and under Putrid.
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WordNet (r) 3.0 (2006):

sore throat
    n 1: inflammation of the fauces and pharynx [syn: sore throat,
         pharyngitis, raw throat]