لصب

لِصْبٌ ذ A small ravine, or gap, (شِعْبٌ صَغِيرٌ,) in a mountain, (S, K,) narrower than a لِهْب, and wider than a شِعْب: (K:) or a cleft (شَقٌّ) in a mountain, narrower than a لهب, and wider than a شعب: (Es-Sukkaree:) or the narrow part of a valley: (K:) and any narrow place in a mountain: (S:) pl. لِصَابٌ and لُصُوبٌ. (K.) [In two copies of the S, these two pls., app. by the careless omission of the word الجَمْعُ, are made syn. with لِصْبٌ in the last of the senses explained above.]