Quick answer
Rosalyn is a girl name.
Pronunciation: English /ˈɹoʊ.zə.ˌlɪn/; American English /ˈɹɑz.ə.ˌlɪn/; British English /ˈɹɒz.ə.ˌlɪn/.
Meaning and history
This name is a variant of Rosaline. It can also be considered an elaboration of Rose with the common name suffix lyn.
Notes and context
Usage: english