Usage: 1 form in 3 verses
Form Translated As     In Verse(s)
κατέπηξαν firmly fastened LXX.Hos.5.2
they fastened down LXX.1Sam.31.10
they firmly fastened LXX.Hos.9.8

Liddell-Scott-Jones

καταπήγνυμι (katapēgnumi) to fasten down G:V

καταπήγνυμι

and καταπηγνύω [Refs 4th c.BC+], stick fast in something, plant firmly, [Refs 8th c.BC+]; ἐν δὲ σκόλοπας κ. [Refs 5th c.BC+]:—passive, [Refs 4th c.BC+]

__2 metaphorically, fix, crystallize, [Refs 5th c.AD+].
__II passive, with perfect and pluperfect active, stand fast or firm in, [Refs 8th c.BC+].
__II.2 become congealed, freeze, [Refs 2nd c.BC+]; of fish, ὑπὸ τοῦ ψύχους κ. [Refs 4th c.BC+]