Arabic dictionary
Dictionary Arabic-English Lexicon by Edward William Lane (d. 1876)
Entry لسن
لَسَنٌ Chasteness, or perspicuity, or clearness, of speech, (S, Msb, K,) and eloquence; (Msb;) i. q. بَيَانٌ: or, as some say, the quality of speaking well: and chasteness, or perspicuity, or eloquence, of speech, and sharpness of tongue. (TA.) لِسَانٌ of a sandal, The thing (هَنَة) projecting in the fore part thereof. (TA.) See مِسْرَدٌ.
لِسَانٌ The tongue [or cock] of a balance: see مِنْجَمٌ in the S and K.
لِسَانٌ In formation, news, or tidings; syn. خَبَرٌ. (S in art. علو.) See a verse cited voce عُلْوٌ.
تَلَسُّنٌ: see خَلِيَّةٌ, voce خَلِىٌّ مُلَسَّنٌ, (S,) or with ة, (K,) A sandal long and slender, like the form of the tongue: (S, K:) or having the extremity of its fore part like the extremity of the tongue. (TA.)
E.W. Lane's Arabic-English Lexicon (8 parts, London, 1863-93) is a major Arabic-English dictionary based on 112 sources, mostly medieval ones, along with al-Zabidi's Taj al-Aroos (also included in Lisaan.net). Lane died before he could finish the work, his great-nephew Stanley Lane-Poole finished it, publishing Volumes VI, VII and VIII from 1877–1893 using Lane's incomplete notes. Lane-Pool's work is of lower quality than Lane's. The work of Reinhart Dozy (see below) was meant as a supplement to Lane's work that covers modern Arabic (Lane focused on classical Arabic only). The digital text for the Lexicon was sourced from Tufts University under a Creative Commons Attribution-ShareAlike 3.0 United States License. We used a TXT version created by an internet user named Navid-ul-Islam. Lisaan.net's version of the Lane Lexicon corrects various errors from both the Persues project (such as erroneous transcriptions of the Persian letter ژ) and the TXT version. Lisaan.net's version also provides helpful automatic annotations on the various abbreviations used by Lane.