ک ل حk-l-ḥ
(ف) كَلَحَ يَكْلَحُ كُلُوْحًاkalaḥa yaklaḥu kulūḥan: for the lips to shrink back so that the teeth stand out, for the face to be distorted.
كَالِحkāliḥ pl. كَالِحُوْنkāliḥūn (active participle, ism fāʿil): one whose lips are drawn back and whose teeth stand out. Only once in the Quran, in the description of the faces of the people of Hell: ﴿تَلْفَحُ وُجُوْهَهُمُ النَّارُ وَهُمْ فِيْهَا كَالِحُوْنَ﴾ (Al-Muʾminūn 23:104).