Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
κατεκένωσεν emptied LXX.2Sam.13.9
κατακενούν their emptying LXX.Gen.42.35

Liddell-Scott-Jones

κατακενόω (katakenoō) to empty G:V

κατακενόω,

strengthened for κενόω, σάκκους [LXX+1st c.AD+]

LSJ Scripture Refs: LXX.Gen.42.35