فك

الفَكُّ ذ The لَحْى [meaning jaw; and also either of the two lateral portions of the lower jaw ], (S, O, Msb, K,) i. e. (Msb) each of the لَحْيَانِ; (Mgh, Msb;) as also ↓ الأَفَكُّ: (O, K:) or this latter signifies the مَجْمَع [or part in which is the commissure ] of the خَطْم [generally meaning muzzle ]; (Lth, O, K;) as also الفَكُّ; (TA;) that is, (Lth, O, in the K “ or ” [as if to denote a different meaning],) [ the part in which is the symphysis ] of the فَكَّانِ [or two lateral portions of the lower jaw ]: (Lth, O, K:) [see الفَنِيكُ:] and الفَكَّانِ is said to mean the place [ on either side with that on the other side ] where the two jaws meet [ and are articulated ] next the temple, above and below; of a human being and of a horse or the like: (TA:) and, in the Bári', (Msb,) or in the T, (TA,) the place of meeting of the two sides of the mouth (مُلْتَقَى الشِّدْقَيْنِ) on both sides: (Msb, TA:) [but this last explanation is strange, and app. little known:]) pl. فُكُوكٌ. (Msb.) One says, مَقْتَلُ الرَّجُلِ بَيْنَ فَكَّيْهِ [which may be best rendered The man's slayer is between his two jaws, or two lateral portions of his lower jaw ]; (S, O, TA;) meaning the man's tongue: (TA:) a prov., in which مقتل may be [properly] an inf. n., or a noun of place, or an inf. n. used in the place of an act. part. n.: accord. to the third of these explanations, [which most nearly denotes the meaning intended,] it is as though one said, قَاتِلُ الرَّجُلِ بَيْنَ فَكَّيْهِ. (Meyd. [See Freytag's Arab. Prov., ii. 597.]) See also فَكَكٌ.