Other forms: tangs
A tang is a sharp flavor or smell, like the tang of fresh-squeezed lemonade or the tang of the salty ocean breeze.
When you eat something sour, you taste a tang, like the tang of blue cheese or vinegar in your salad. Although it's no longer available today, Tang was also the name of a tangy, sugary orange drink that was especially popular in the 1960s and 70s. From a root word meaning "to bite," tang's original meaning was "serpent's tongue."