5438  phulake  foo-lak-ay'

 from 5442; 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:--
cage, hold, (im-)prison(-
ment), ward, watch.

 see GREEK for 5442