[1] If, as seems reasonable to assume, the headword is extracted from the quotation, it is neuter singular of this adjective (a compound of the adverb pa/lin, "back", and the verbal root bol-, "throw"; cf. pi 89, and LSJ entry at web address 1).
[2] Part of Menander Protector fr. 10.1 Blockley (112-113); on Chosroes's (cf. chi 418 generally) judgment, during the Turkish embassy of 567-568, that the nomadic peoples of Scythia are untrustworthy; cf. Blockley (262 note 116). See further extracts from this fragment at theta 509, nu 439, pi 120, and omega 116.