preposition / conjunction
till
TIL/tɪl/
Up to a particular time or event.
The workers pack boxes till the hourglass runs out.

Etymology
Old Norse til expressed reaching a limit, including a limit in time. In the selected meaning, that endpoint is temporal: an action or state continues up to the specified time.
In context
"Don't smile till November,"
'We let the kids stay up till midnight on New Year's Eve.'
More examples
- The store is open till nine.
- Stay here till I return.
- They worked till sunset.
Forms
till