φύλαξ (phýlaxfoo'-laxnounguard)
[Grk] φύλαξ LN: 37.121 GK: G5874 Hebrew: צוּר, שָׁמַר
Derivation: from φυλάσσω;
Strong's: a watcher or sentry
KJV: --keeper.
See: φυλάσσω