| built against or attached to a wall | joined or linked together |
| having services contracted for | plugged in |
| (used of toothed parts or gears) interlocked and interacting | being joined in close association |
| involved in military hostilities | wired together to an alarm system |
| (of facilities such as telephones or lavatories) unavailable for use by anyone else or indicating unavailability; (`engaged' is a British term for a busy telephone line) | stored in, controlled by, or in direct communication with a central computer |
| reserved in advance | |
| having ones attention or mind or energy engaged | |
| pledged to be married | |