goiter UK /ˈɡɔɪtə/US /ˈɡɔɪtɚ/noun 1forms 1phrases 1 noun1 •An enlargement of the front and sides of the neck caused by inflammation of the thyroid gland. formsgoiters Phrases with goiter German goiterA protruding stomach, especially one supposed to be indicative of excessive consumption of beer.