1. Godan verb with 'mu' ending, Intransitive verb

   to be dazzled by; to be dizzied by; to be disoriented by

   Usually written using kana alone

   真昼の太陽がテニスコートを目も眩むほどに照らしあげた。

2. to be lost in (greed, lust, etc.)

   Usually written using kana alone

3. to become dark

   Archaic

Also written 暗む【くらむ】kuramu、晦む【くらむ】kuramu