俳はい壇だんはいだんMeanings1nounhaiku circles; the haiku worldRefers to the community, publications, and activities of haiku poets as a social and literary sphere.彼かれは俳はい壇だんで高たかく評ひょう価かされている。He is highly regarded in haiku circles.新しん人じんが俳はい壇だんに登とう場じょうした。A newcomer has appeared on the haiku scene.