עֹונָה (ʻôwnâho-naw'noun|femininecohabitation)
[Heb] עֹונָה, עֹנָה ETCBC: עֹנָה‎ (subs|intercourse) OSHL: p.dt.ab TWOT: 1650a GK: H6703 Greek: ὁμιλία
Derivation: from an unused root apparently meaning to dwell together;
Strong's: sexual (cohabitation)
KJV: duty of marriage.