عس

R. Q. 1 عَسْعَسَ ذ : see عَسَّ. ― -b2- عَسْعَسَ اللَّيْلُ The night came on: (AO, IAar, Msb:) or came on with its darkness; (TA;) its darkness came on: (IDrd, S, O, K:) or departed: (IDrd, O, K:) or it has this last meaning also; (AO, IAar, Msb;) bearing two contr. significations: (Ktr, AHát, Msb:) or was dark; meaning, all the night: (IAar:) Fr says that, in the Kur [lxxxi. 17], وَا@للَّيْلِ اـِذَا عَسْعَسَ, accord. to all the expositors, signifies and by the night when it departeth: but that some of his companions asserted the meaning to be when its commencement approacheth, and it becometh dark: like as you say عَسْعَسَ السَّحَابُ, (S, O,) which signifies the clouds approached the earth: (Fr, S, O, K:) or this is only said when it is in the night, with darkness and lightning. (Lth, O, TA.)