ومض1 وَمڤضَ see 4.4 اومض It (lightning) flashed, gleamed, or shone, slightly, (S, A, Msb, K,) not extending sideways in the adjacent tracts of cloud; (S, K;) for when it does thus, it is termed خَفْوٌ; and when it extends high in the sky, without extending sideways to the right and left, it is termed عَقِيقَةٌ: (S:) it is also said of other things, beside lightning: (M:) and ↓ وَمَضَ, (S, M, A, Msb, K,) aor. ـِ (S, Msb, K,) inf. n. وَمِيضٌ and وَمْضٌ (S, M, A, K) and وَمَضَانٌ (S, A, K) and تَوْمَاضٌ, (M,) signifies the same; (S, M, A, Msb, K;) or it (lightning) flashed faintly or weakly, and then disappeared, and then flashed again; (IAar;) and is also, sometimes, said of fire, (M, TA,) and of anything of a clear [or bright] colour: (El-' Eyn:) or both verbs signify it (lightning) gleamed, or shone. (Ham, p. 785.) b2:  Hence, أَوْمَضَتِ المَرْأَةُ (tropical:)  The woman smiled, so as to display her teeth: the glistening of her front teeth being likened to the flashing of lightning. (A, TA.) b3:  And (tropical:)  The woman stole a glance, or glances; (S, M, K;) as also اومضت بِعَيْنِهَا: (A:) or this last,(assumed tropical:)  the woman looked, or gazed with widely opened eyes. (L.) b4:  and اومض لَهُ بِعَيْنِهِ (assumed tropical:)  He made a sign to him with his eye: (M:) or اومض فُلَانٌ (tropical:)  such a one made a private, or secret, sign, (K, TA,) إِلَيَّ to me. (TA.) A2:  Also, He saw the slight flashing, or gleaming, or shining, of lightning, or of fire. (M, TA.) وَمْضَةٌ [A slight flash of lightning, &c.] Yousay, شِمْتُ وَمْضَةَ بَرْقٍ كَنَبْضَةِ عِرْقٍ [I looked at a slight flash of lightning, like a single pulsation of an artery, to see whither it tended, and where it might rain]. (A, TA.) بَرْقٌ وَمِيضٌ i. q. ↓ وَامِضٌ [Lightning flashing, gleaming, or shining, slightly; &c.: وميض in this case being app. an inf. n. used as an epithet.] (TA.) وَامِضٌ: see what next precedes.