"Variant of Jamilah"
The name Jamylah is commonly a female name from the "African" origin.
Jamylah is a variant spelling of Jamilah, the feminine form of the Arabic masculine name Jamil. Both come from the Arabic root j-m-l, whose core sense is beauty. The substitution of y for i is one of several transliterations of the same name used in English.
Jamilah means "Beautiful, Graceful, Lovely.".
The pronunciation of Jamylah is juh-MY-luh.