Reconstructions

PWS
*pakk- - jaw, joint of the jaw (SED I No. 212)
Rather scarce but reliable attestation. -n- in one of the Arb. forms may imply Sem. *pank- > *pakk-. Cf. a variant root *pagg- ‘jaw’: Hbr. pB. pag (Jastrow 1132); Jud. pagga (ibid.), Syr. pagga (LSyr. 555).
PWS
*pVḳ- - neck (SED I No. 213)
PWS
*pḳˁ - to split (EDA I 147)
PWS
*pūl- - bean (EDA I 195)
PWS
*plḥ - to cleave, to split (EDA I 236)
PWS
*palk- - spindle (EDA I 252)
PWS
*pls - to destroy (EDA I 299)
May be the same root as plš ‘to pierce’
PWS
*plṭ - to split, to separate (CDG 161)
PWS
*plṭ - to escape (Kogan 2015: 85)
PWS
*ply - to delouse (SED II No. 175; Kogan 2011: 213)