Gwinna \g-winna, gwi(n)-na\ as a girl's name is a variant of Gwyn (Welsh), and the meaning of Gwinna is "fair, white, blessed, holy".
The baby name Gwinna sounds like Ginna, Gwynna, Guinna, Gwenna, Gwinne and Gwinn. Other similar baby names are Gaiana, Glenna, Gwynne, Gwynn, Gwenny, Gwenn, Guenna, Gaenna, Gunna, Gwenda, Gwenni, Gwin and Kinna.