Comments:For PA cf. rather PIE *plewi̯- 'Pleiades' (902) (cf. also PAN *buluq 'Pleiades'); cf. also PD *pul- 'dawn, shine' 1353, PA *p`i̯àlk`i 'lightning, thunder' 1782; PIE *(s)pAlg(ʷ)- `shine, sparkle' 2618; PA *p`ilo 'to dry, heat'; PFU *piLV 'warm, burn'; cf. also some forms under *belV.
References:МССНЯ 337; ND 1726 *[p]aĺ/ḷV 'burn, be heated'.