noun
Japanese aspen
A deciduous tree native to Japan, Populus tremula var. sieboldii. The name literally means 'mountain rumbling', from the sound of its leaves rustling in the wind.
ヤマナラシの葉が風にそよいで、さらさらと音を立てている。
The leaves of the Japanese aspen are rustling in the wind.
From 山 (yama, 'mountain') + 鳴らし (narashi, 'making sound'), referring to the rustling sound of the leaves.