Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
σκεπάρνω With a hammer LXX.Isa.44.12
σκεπάρνοισ adz LXX.2Sam.12.31LXX.1Chr.20.3

Liddell-Scott-Jones

σκέπαρνον (skeparnon) a hammer G:N-N

σκέπαρνον-ον, τό,

or σκέπαρνονος, (the Homeric passages and [LXX], leave the gender uncertain, masculine in [Refs 5th c.BC+]; later mostly neuter, [Refs 1st c.AD+]:— carpenter's axe, adze, for hewing and smoothing the trunks of trees, different from the πέλεκυς (felling-axe or hatchet), [Refs 8th c.BC+]; ἀμφίξουν [Refs]

__II from a like ness in the shape, a slightly oblique surgical bandage, [Refs 5th c.BC+] with many oblique turns, [Refs]
__III used, as a sort of pun, of a sheepskin, as if σκέπ-αρνον, [Refs 8th c.BC+]

LSJ Scripture Refs: LXX.1Chr.20.3LXX.Isa.44.12