Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
εχαράκωσεν built a palisade LXX.Jer.32.2
εχαράκωσα I built a palisade LXX.Isa.5.2

Liddell-Scott-Jones

χαρακόω (charakoō) to build a palisade G:V

χαρακόω,

fence by a palisade, fortify, Ἐλάτειαν [Refs 4th c.BC+] —passive, ὄστρακον κεχαρακωμένον ταῖς ἀκάνθαις, of the echinus, [Refs 4th c.BC+]

__2 absolutely, χ. ἐπὶ Ἰερουσαλήμ raise a barricade against it, besiege it, [LXX]
__II prop vines with stakes, [ἄμπελον] [Refs 3rd c.BC+]

LSJ Scripture Refs: LXX.Jer.39.2*