1. launch (of a rocket, satellite, etc.); lift-off; shooting off (fireworks); (fireworks) display
今夜はロケットの打ち上げがある。There is a rocket launch tonight.
2. end (of a project, theatrical run, etc.); close; completion
3. party to celebrate the successful completion of a project (run of performances, etc.); wrap party
打ち上げでも会ったね。We met at the wrap party too, didn't we?