sour tooth

== English == === Alternative forms === sour-tooth === Etymology === By analogy with sweet tooth. === Pronunciation === === Noun === sour tooth (plural sour tooths) (idiomatic, only in singular, uncommon) A liking for foods that are sour. Coordinate terms: salty tooth, spicy tooth, sweet tooth (idiomatic, countable, rare) Someone with a liking for sour foods.