In the East Caribbean, it's the way of saying fair-skin. Feskin is the adjective word (correct adjective is fair-skinned) used very commonly to refer to a light-skinned black person
1: Who's your girlfriend?
2: (Shows her picture to 1.)

1. Wow, she feskin, muh-muh
by Lime Juice (St. Lucia) January 2, 2023
Get the Feskin mug.