ὀχύρωμα (ochýrōma|okh-oo'-ro-mah|noun|stronghold)
[Grk] ὀχύρωμα LN: 7.21 GK: G4065 Hebrew: בֹּור‎, בַּיִת‎, בָּצַר‎, הֵיכָל‎, מִבְצָר‎, מַסְגֵּר‎, מַעֲשֶׂה‎, מְצַד‎, מָצֹור‎, עֹז‎, צְרִיחַ‎
Derivation: from a remote derivative of ἔχω (meaning to fortify, through the idea of holding safely);
Strong's: a castle (figuratively, argument)
KJV: --stronghold.
See: ἔχω