1
launch (of a rocket, satellite, etc.);lift-off;shooting off (fireworks);(fireworks) display
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
See also:
打ち上げ会 (うちあげかい)
Other forms
打上げ 【うちあげ】 · 打ち揚げ 【うちあげ】 (rarely used kanji form) · 打揚げ 【うちあげ】 (rarely used kanji form)