Possibly related to Akk. parāˀu ‘to slice, to slit’. This is a semantically somewhat daring comparison, but PS *p-r-γ would, in fact, best account for the presence of the “strong aleph” in the Akkadian verb.
Arabic
frḫ - II. to produce many offsets or shoots (trees)
(Lane 2362)
dialect of Hadramaut
Almost certainly connected to *parḫ- - chick, brood, young of a bird
Arabic
frk - VII. to be dislocated (the head of the humerus from its scapula), to be lax or slack (the shoulder-joint)
(Lane 2388)
Arabic
frk - to rub and press a thing so that its integument becomes stripped off from its kernel, to rob and press the ears of corn so that the kernels become divested of their husks
(Lane 2387)
Arabic
frm - couper en petits morceaux (to cut into small pieces)
(BK 2 587)