Dina is a big fan of Led Zeppelin and, as most fans know, these runes represent the four members of the band.
The four symbols represent, from left to right, Jimmy Page, John Paul Jones, John Bonham, and Robert Plant. These symbols appeared on the band's untitled fourth album and, for many people, represented the name of the record (i.e. "Zoso" or "Runes"). There's more on the naming of "IV" here.
This is one of three tattoos Dina has and, in case you were wondering, "Since I've Been Loving You" is her favorite Zeppelin tune.
Thanks to Dina for sharing her runes with us here on Tattoosday!
A little bonus, in honor of Dina: