Till

1. Until; to, up to; as late as (a given time).
2. (obsolete) To, up to (physically).
3. (dialectal) To make it possible that.

"till" in this context is usually considered colloquial in modern English (except for in some regional varients such as Indian English) and in most cases can be replaced by "until" or "to".

(until): til (nonstandard), 'til (nonstandard), until

1. Until, until the time that.

(until): til (nonstandard), 'til (poetic), until; until