STEP Greek Lexicon: ἐπισπάω

ἐπι-σπάω, -ῶ

[in LXX: Isa.5:18 (מָשַׁךְ), etc. ;]

to draw on: mid., in peculiar sense of effacing signs of Judaism (cf. 1Ma.1:15, FlJ, Ant., xii, 5, i; see Thayer, see word), to become as uncircumcised: 1Co.7:18.†

(AS)