Source : Webster's Revised Unabridged Dictionary (1913)

Goiter \Goi"ter\ Goitre \Goi"tre\, n. [F. go[^i]tre, L. guttur
   throat, cf. tumidum guttur goiter, gutturosus goitered. See
   {Guttural}.] (Med.)
   An enlargement of the thyroid gland, on the anterior part of
   the neck; bronchocele. It is frequently associated with
   cretinism, and is most common in mountainous regions,
   especially in certain parts of Switzerland.

Source : WordNet®

goiter
     n : abnormally enlarged thyroid gland; can result from
         under-production or over-production of hormone or from a
         deficiency of iodine in the diet [syn: {goitre}, {struma},
          {thyromegaly}]