It is either an acronym for Naval Ophthalmic Support and Training Activity (US Navy), or an Italian word which means "our".
It means: "it is a nostra vostra." (nostra and vostra are not spanish words. They are Italian words for our and your).
Legion Patria Nostra is on latin, and it means Legion is our Fatherland.
This Cocaine of Ours
We dare defend our rights.
It is Italian for, The Pages of Our lives.
Europa Nostra was created in 1963.
Italia Nostra was created in 1955.
Nostra Aetate was created in 1965.
Dona Nostra was created in 1993-03.
Our dinner is now being prepared by the cook.
La Coka Nostra was created in 2006.
The Cosa Nostra Klub ended in 1998.