Let's clear this pet peeve of mine up right now, lol:
The word "till" is a gardening or farming term that refers to turning the Earth, planting, sewing, etc.
ie: "We need to till the south forty tomorrow."
However, most people use it as what they think is the contracted form of the word "until."
ie: "I won't see you "till" next week."
The word you're groping for is "'til," as in: "I won't see you "'til" next week." It's a contraction of the word "until."
I know. It's so prevelant that you can look it up and it will tell you that "till" means "until."
It's wrong. Yep. It's wrong.
It's an example of the folks who write up definitions giving in to societal laziness and, ultimately, to incorrect information.
And yes, I am in fact an expert. Lol.