expression, noun-modifying (irregular)
rainy; rain-falling
Prenominal phrase describing a day, scene, or sound associated with falling rain. Often used in literary or descriptive contexts.
On rainy days, I like to read books at home.
I can hear the sound of rain falling.
A phrase composed of 雨 (rain), the possessive particle の, and the verb 降る (to fall, of precipitation). The exact historical derivation is straightforward; it functions as a set prenominal expression.