adj.
1.having ones attention or mind or energy engaged
2.involved in military hostilities
3.reserved in advance
4.(of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability
5.(used of toothed parts or gears) interlocked and interacting
6.having services contracted for
7.built against or attached to a wall
8.pledged to be married
Idiom of the Day
fall short of (one's expectations)
to be not as good as one expected
The new movie fell short of people's expectations and attendance is very low.