mountain in spring when buds open all at once; laughing mountain
Poetic seasonal phrase (kigo) for spring, personifying the mountain as smiling when fresh green leaves emerge simultaneously. Used in haiku and literary contexts.
When the season of the laughing mountain arrives, the village comes back to life.
In haiku, 'yamawarau' is used as a spring seasonal word.
Compound of 山 (yama, 'mountain') and 笑う (warau, 'to laugh'). The personification of the mountain 'laughing' comes from the visual effect of buds opening simultaneously in spring, resembling a smile.