(S, K) and ↓سُعْرُورَةٌ (K) (assumed tropical:) Daybreak. (K.)
2.
And (assumed tropical:) The rays of the sun entering an aperture of a house or chamber: (K, * TA:) or the motes that are seen in the rays of the sun (Az, S, TA) when they fall into a chamber, moving to and fro. (Az, TA.)