roar of laughter (from multiple people); burst of laughter; uproarious laughter
laughing hard (of a single person)
そのギャグで場が爆笑に包まれた。
That gag sent the room into uproarious laughter.
彼女の失言が爆笑を誘い、緊張した雰囲気が一気に和んだ。
Her slip of the tongue drew a burst of laughter, instantly easing the tense atmosphere.
審査員も爆笑させたコント師がグランプリを獲得した。
The comedian who even made the judges burst out laughing won the grand prize.