Only the definendum can penetrate this lineup of filters. The next parameter to look for is the characteristics of the definiendum. In the case of physical objects, we will be looking for physical characteristics, of course. Otherwise, we will be looking for more ephemeral traits. The first might not be immediately recognizable, the second may be inaccurate, non-universal or otherwise lacking.
Every definition contrasts the general with the particular.
This would be impossible without a union of the general and the particular. Only by pointing out examples of blue. These are usually words in a private language, our private language. They usually include in the definition things that they should have excluded, exclude things that they should have included or get it altogether wrong. But this has nothing to do with their accuracy or truthfulness.