لهب

لِهْبٌ ذ A gap, or space, between two mountains: (S, K:) or a cleft, or fissure, in a mountain: (Lh, K:) or a small gap, or ravine, such as is termed شِعْبٌ, in a mountain: (K:) or a cleft in a mountain, afterwards widening like a road: a لِصْب and a شَقّ are smaller than a لهب; like a small road: (Aboo-Sa'eed-Es-Sukkaree:) or a face of a mountain, resembling a wall, that cannot be ascended: (K:) and similar to this is the لهب of the sky at the horizon: or, as some say, a subterranean excavation, or habitation: syn. سَرَبٌ فِى الأَرْضِ: (TA:) pl. أَلْهَابٌ and لُهُوبٌ and لِهَابٌ (S, K) and لِهَابَةٌ. (K.) See an ex. voce كَرَبَة.