Strong's #5441: phulax (pronounced foo'-lax)
from 5442; a watcher or sentry:--keeper.
Thayer's Greek Lexicon:
́
phulax
1) a guard, keeper
Part of Speech: noun masculine
Relation: from G5442
Usage:
This word is used 4 times:
Acts 5:23: "safety, and the keepers standing without before the"
Acts 12:6: "bound with two chains: and the keepers before"
Acts 12:6: "bound with two chains: and the keepers before"
Acts 12:19: "him not, he examined the keepers, and commanded that they should be put to death. And he went down"