The Collaborative International Dictionary of English v.0.48:

Till \Till\, prep. [OE. til, Icel. til; akin to Dan. til, Sw.
   till, OFries. til, also to AS. til good, excellent, G. ziel
   end, limit, object, OHG. zil, Goth. tils, gatils, fit,
   convenient, and E. till to cultivate. See Till, v. t.]
   To; unto; up to; as far as; until; -- now used only in
   respect to time, but formerly, also, of place, degree, etc.,
   and still so used in Scotland and in parts of England and
   Ireland; as, I worked till four o'clock; I will wait till
   next week.
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         He . . . came till an house.             --Chaucer.
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         Women, up till this
         Cramped under worse than South-sea-isle taboo.
                                                  --Tennyson.
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         Similar sentiments will recur to every one familiar
         with his writings -- all through them till the very
         end.                                     --Prof.
                                                  Wilson.
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   Till now, to the present time.

   Till then, to that time.
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