G5438 φυλακή (phylakḗ)

KJV renderings: cage, hold, (im-)prison(-ment), ward, watch
Strong's definition: a guarding or (concretely, guard), the act, the person; figuratively, the place, the condition, or (specially), the time (as a division of day or night), literally or figuratively
Derivation: from G5442 (φυλάσσω);

From James Strong's public-domain dictionaries (G), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.