The word `till` is a synonym of `until`, so the meaning is the same, yes. `Until` is the more standard word.

It can also be written `'til` or `til`. (Both are less formal than `until`)

**Edit:** Note that `until` is the preferred word today, so `until` will usually sound most natural. Other meanings of `till` are even included in this graph:

![enter image description here][1]


  [1]: https://i.sstatic.net/7uOts.png