Abarim Publications' online Biblical Hebrew Dictionary
The root-verb כהה (kaha) means to be dim or darkened and is often used for the effects old age has on one's eyesight (Deuteronomy 34:7, Isaiah 42:4). It comes with two derivatives:
- The adjective כהה (keheh), meaning dim, dull or faint (1 Samuel 3:2, Isaiah 61:3).
- The feminine noun כהה (keha), meaning a lessening or alleviating. Some translations read "healing," but that overshoots the meaning of this root somewhat. It occurs only in Nahum 3:19.