What does gharīb not mean?

Gharīb Hadith: A Single Narrator in a Generation

Here, gharīb does not mean that a person is poor.

Gharīb does not mean that the whole sanad contains only one name. The example mentions Abu Hurayrah, Abu Ṣāliḥ and ʿAbdullāh ibn Dīnār, but they are not narrators of the same generation.

If every generation has two or more narrators, there is no generation with just one narrator.