"Variant of Uthman"
The name Ousmane is commonly a male name from the "Arabic" origin.
Ousmane is the form of the Arabic name Uthman used in francophone West Africa, notably in Senegal, Mali and Guinea, where French spelling renders the Arabic letter transliterated elsewhere as th with an s. Comparable spellings in other traditions include Usman, Osman and Othman. The Arabic name is that of Uthman ibn Affan, the third of the Rashidun caliphs.
Uthman means "A friend of Muhammad.".
The pronunciation of Ousmane is oos-MAH-nay.