Entry
  1. Interjection (kandoushi)

    ta-dah!; ta-da!; voilà!

    see じゃじゃーん

    ジャーン。それじゃ春田くん、もう見てもいいわよ。みんなの浴衣、お披露目ねぇ〜。
    Ta-dah! Well then, Haruta, it's OK to look now! It's everybody's yukata debut.
  2. Adverb taking the 'to' particle

    clash; crash; bang

    Onomatopoeic or mimetic word

Also written ジャーンじゃんジャン

Pitch on OJAD