1.
sunlight filtering through trees; dappled sunlight
The beautiful effect of sunlight streaming through gaps in tree leaves, creating patterns of light and shadow on the ground.
Etymology
木 (tree) + 漏れ (to leak through) + 日 (sunlight) - literally "sunlight leaking through trees"
Cultural note
This is considered one of Japan's beautiful untranslatable words, representing the Japanese appreciation for subtle natural phenomena. It's often cited as an example of the Japanese aesthetic sensitivity to nature.