any 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"
the 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"
catch or try to catch fish or shellfish; "I like to go fishing on weekends"
an unstable construction with playing cards; "he built three levels of his cardcastle before it collapsed"
a speculative scheme that depends on unstable factors that the planner cannot control; "his proposal was nothing but a house of cards"; "a real estate bubble"