noun (n)

• abnormally enlarged thyroid gland; can result from underproduction or overproduction of hormone or from a deficiency of iodine in the diet(noun.state)

  Synonym:
  goitre, struma, thyromegaly
  

  source: wordnet30
• 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.(noun)

  source: webster1913