The heat (S, K) of fire; (S;) as also ↓سُعْرٌ: (K:) and (tropical:) of night. (A.)
2.
See also سُعْرٌ, in two places.
3.
Also (assumed tropical:) Evil, or mischief: so in the saying, لَا يَنَامُ النَّاسُ مِنْ سُعَارِهِ [Men will not sleep by reason of his evil, or mischief], occurring in a tradition (TA.)