(n)fishany of various mostly cold-blooded aquatic vertebrates usually having scales and breathing through gills“the shark is a large fish”, “in the living room there was a tank of colorful fish”
(n)fishthe flesh of fish used as food“in Japan most fish is eaten raw”, “after the scare about foot-and-mouth disease a lot of people started eating fish instead of meat”, “they have a chef who specializes in fish”