Hebrew

ŝārāp - Saraph serpent (HALOT 1360)

A relatively rare term attested both in prose (in Nu 21.6 and Dt 8.15 as an appositon to nahas ‘snake’) and poetry (in Is 14.29 and 30.6 as ŝārāp məˁōpēp ‘flying ŝ.’). In Is 6.2,6 the pl. form ŝərāpīm denotes a kind of flying divine beings.

PS
*ŝarap- - kind of creeping creature (SED II No. 215)
Since the attestation of the Mhr. form is not fully reliable, the PS reconstruction is uncertain. On the other hand, the traditional derivation of the Hbr. term from the verbal root *ŝrp ‘to burn’ does not seem to have any textual support.