The Collaborative International Dictionary of English v.0.48:

Goitrous \Goi"trous\, a. [F. go[^i]treux, L. gutturosus. See
   Goiter.]
   Pertaining to the goiter; affected with the goiter; of the
   nature of goiter or bronchocele.
   [1913 Webster]

         Let me not be understood as insinuating that the
         inhabitants in general are either goitrous or idiots.
                                                  --W. Coxe.