فَكَكٌ

An unknit, or a loosened, state (اِنْفِرَاج) of the مَنْكِب [or shoulder-joint]. (K. [But see 1, last explanation but one, where it is mentioned as a verbal noun])

And (K) A state of dislocation of the foot: (S, O, K:) hence the phrase, in a verse of Ru-beh, كَمُنْهَاضِ الفَلَكٌ: (S, O: *) but (in this instance, O), according to As, الفَلَك is used by poetic license for الفَكّ [meaning “ the jaw, ” so that the phrase signifies like him whose jaw has become broken after its having been set]. (S, O.)

And A state of fracture of the jaw: (K, TA:) or of dislocation thereof. (TA.)