دخن

يَوْمٌ دَخْنَانٌ يوم دخنان (tropical:) A hot, or an intensely hot, day: (JK, K, TA:) and لَيْلَةٌ دَخْنَانَةٌ (tropical:) a night intensely hot, (JK, TA,) in which the heat is such as takes away the breath; (TA;) as though it were overspread by smoke: (JK, TA:) or a dusky, or dingy, night, inclining to blackness. (S.)