noun, noun or participle which takes 'suru', intransitive verb
loud laughter; hearty laugh
Refers to a big, unrestrained laugh. Often used in the phrase 大笑いする, but the noun form 大笑 is also common.
彼の冗談にみんな大笑した。
Everyone burst into loud laughter at his joke.
その話を聞いて、思わず大笑
Hearing that story, I couldn't help but laugh out loud.