noun
riot of cherry blossoms
A yojijukugo describing cherry blossoms in full, glorious bloom, often evoking a scene of overwhelming beauty.
春の公園は桜花爛漫の景色だった。
The park in spring was a scene of cherry blossoms in full riotous bloom.
A yojijukugo composed of 桜花 (cherry blossoms) and 爛漫 (glorious, brilliant). The exact historical derivation is uncertain, but it is a literary phrase used to describe the peak beauty of cherry blossoms.