Extended Strong's Greek Lexicon (Abbott-Smith based)
bedroom/chamberlain
Usage: κοιτών, -ῶνος, ὁ (κοίτη = Att.., δωμότιον, see Kennedy, Sources, 40), [in LXX chiefly for חֶדֶר, 2Ki.4:7, Jol.2:16; I Est.3:3, al. ;] a bed-chamber; ὁ ἐπὶ τοῦ κ., a chamberlain: Act.12:20.† (AS)