Refers to a type of fish or can also describe someone from Sardinia.
Me gusta comer sardo en ensaladas, ya que aporta un sabor único.
I enjoy eating sardines in salads, as they add a unique flavor.
En la lata había un sardo en aceite que sabía delicioso con pan fresco.
In the can, there was a sardine in oil that tasted delicious with fresh bread.