a few months "back"

[sitifan]

But perhaps her most recent contribution came a few months back.
What does back mean in the above sentence?

[Barb_D]

It's the same as "ago."

[emsr2d2]

But perhaps her most recent contribution came a few months back.
What does back mean in the above sentence?

If you consider that "ago" means "back[wards] in time" then it may make more sense.

I finished university a few years back.
He wrote that book a good twenty years back.
A few months back, I was very unhappy. Now I'm fine.