What do you call a male child of your female cousin? [duplicate]
That would be your first cousin once removed.
The term is the same whatever the gender of your cousin or the child.
https://support.ancestry.com/s/article/Understanding-Kinship-Terms
In cousin relationships, the term removed indicates the separation of a generation. Your first cousin is the same generation as you are, so your first cousin once removed would be either your parent’s first cousin or your first cousin’s child.