noun
darkness; the dark
Refers to a dark place or state of darkness, often with a nuance of being hidden or obscure.
暗がりから突然猫が飛び出した。
A cat suddenly jumped out of the darkness.
彼は暗がりに隠れて様子をうかがった。
He hid in the dark and watched the situation.
暗闇 is a more common and general word for darkness, while 暗がり often implies a specific dark spot or shadowy area.
Compound of 暗 (kura, 'dark') + がり (kari, nominalized form of がる, 'to feel or seem'). The exact derivation is uncertain, but it likely developed from the idea of a place that feels dark.