The term 'cutthroat, for one' is a reference to the cutthroat TROUT, which is a species of TROUT native to western North America. The crossword solution for this term is 'TROUT, ' which is a type of freshwater fish that is found in many parts of the world. Cutthroat TROUT are distinguished by their bright red or orange markings on the underside of their jaw and throat. They are known for their aggressive behavior and are popular among anglers.