Originating from the term Va-Jay-Jay and literally meaning 'Ginger Vagina', the Va-Ginja can be defined as either as a vagina with red pubic hairs, or the vagina of a ginger or redhead.
Although the alternate spelling 'Va-Ginga' is also acceptable, the phonetic spelling 'Va-Ginja' is more commonly used as to avoid confusion in pronunciation.
See also, firebush.
Dude did you see that! That readheaded girl got hit square in the Va-Ginja with a snowball.