سواء كان ذلك المعنى شخصاً كزيد.
Whether the meaning denotes an individual, such as Zayd.
Zayd is a personal name; used as the name of a particular man, it identifies him rather than all human beings.
This is the simplest kind of determinate assignment. But it is not the only kind of khass. The textbook next offers expressions referring to a type and a genus: their extension is wider while their designated meanings remain determinate.