ὀχύρωμα (ochýrōmaokh-oo'-ro-mahnounstronghold)
[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