hdwd=till&listword=till&book=Dictionary&jump=till%5B1%2Cpreposition%5D&list=till%5B1%2Cpreposition%5D%3D1135221%3Btill%5B2%2Cconjunction%5D%3D1135247%3Btill%5B3%2Ctransitive+verb%5D%3D1135271%3Btill%5B4%2Cnoun%5D%3D1135299%3Btill%5B5%2Cnoun%5D%3D1135316%3Bno-till%3D728959 "]"till"[/url] doesn't: it is "used as a function word to indicate continuance (as of an action or condition) to a specified time ". In other senses as prepositions and conjunctions "until" and "till" pretty much overlap.
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