My question is about real vs. nominal definitions. It is generally, though not universally, held that to come up with a real definition, one needs to investigate the world to discover the properties of the entity denoted by the term. So for example, to provide a real definition of the term "tiger," one would need to look at tigers to determine their characteristics. My question is: does this characterization of real definitions imply that one can make assertions about real definitions that are true or false? Consider the following: I fix the denotation of the term "tiger" (pointing to several large cats), and then provide the following real definition of "tiger": an eight-legged invertebrate. Can I accurately say that the real definition I provided for "tiger" is false? Likewise, is the correct real definition of tiger: a large four-legged cat, true?