darkness under trees; gloom beneath branches
Rare literary noun describing the deep shadow or darkness found under dense tree cover. Not used in everyday conversation; more common expressions include 木陰の暗がり or 木の下の暗がり.
Walking alone through the darkness under the trees deep in the forest is a little frightening.
The word 木暗がり sometimes appears in old waka poems.
Compound of 木 (tree) and 暗がり (darkness). The exact historical derivation is uncertain, but the word is formed from native Japanese elements and is not a recent coinage.