A primitive root (rather identical with H6749 through the idea of hovering over (compare H6754)); to {shade} as twilight or an opaque object: - begin to be {dark} shadowing.
Jer 6:4Prepare ye war against her; arise, and let us go up at noon. Woe unto us! for the day goeth away, for the shadowsH6752 of the evening are stretched out.