لَحْنٌ
1.
The meaning of speech; its intended sense or import: (S, K, TA:) its intent: (TA:) [it is direct: and also indirect:] an indication thereof whereby the person addressed is made to understand one's intent; so says Az (Msb: [and the like is said in the TA on the authority of AHeyth:]) an oblique, or ambiguous, mode of speech: (Msb:) an inclining of speech to obliqueness, or ambiguity, and equivocal allusion. (Bd, in xlvii. 32.)
2.
A barbarism, an incorrect word.
3.
عَرَفْتُهُ فِى لَحْنِ كَلَامِهِ and فى نَحْوِ كلامه. and فى مِعْرَاضِ كلامه signify the same. (Msb in article عرض.) See the last of these voce عَرُوضٌ.