1. Up to the time of: We danced until dawn.2. Before (a specified time): She can't leave until Friday.3.Scots Unto; to.
CONJUNCTION:
1. Up to the time that: We walked until it got dark.2. Before: You cannot leave until your work is finished.3. To the point or extent that: I talked until I was hoarse. See Usage Note at till2.
ETYMOLOGY:
Middle English : un-, up to (from Old Norse und; see ant- in Appendix I) + til, till; see till2.