/un til"/ , conj.
1. up to the time that or when; till: He read until his guests arrived.
2. before (usually used in negative constructions): They did not come until the meeting was half over.
prep.
3. onward to or till (a specified time or occurrence): She worked until 6 P.M.
4. before (usually used in negative constructions): He did not go until night.
5. Scot. and North Eng. to; unto.
[ 1150-1200; ME untill, equiv. to un- ( unz up to, as far as) + till TILL 1 ]
Usage . See till 1 .