ṣālal צָלַל ‘to shade’ (Hebrew)

Etymology^?: a primitive root (identical with ṣālal צָלַל ‘to sink’ through the idea of hovering over), compare ṣelem צֶ֫לֶם ‘image’
Roots: צלל

ṣālal v
1) to be or become or grow dark
 1a) (Qal) to become or grow dark
 1b) (Hiphil) to shadow