goi·ter 
(goitər)
(goitər)n.
A noncancerous enlargement of the thyroid gland, visible as a swelling at the front of the neck, that is often associated with iodine deficiency. Also called struma.
[French goitre, back-formation from Old French goitron, throat, gullet, from Vulgar Latin *guttūriō, guttūriōn-, from Latin guttur.]
goitrous (-trəs) adj.