What does a ver mean?

Answer 1

we will see again.

Volver means "to go back/ return"

Volver conjugate with us and it becomes volvemos.

However it has a -re attached so it becomes volveremos which is the future tense.

So volveremos = we will go back.

a = to

ver = see

volveremos (We will go back) a (to) ver(see) = we will go back to see.

However, if the phrase becomes "nos volveremos a ver" the meaning slightly change to "we will see each other again".