ph.
prevent someone from going to bed or to sleep
Oxford American Dictionary
ph.
learn about or be aware of (current events or developments)
Oxford Dictionary
ph.
maintain an impression of wealth or well-being
Oxford Dictionary
ph.
continue a course of action
Oxford Dictionary
ph.
maintain an impression of wealth or well-being, typically to hide the true situation
Oxford American Dictionary
ph.
maintain or preserve something in the existing state; continue a course of action
Oxford American Dictionary
ph.
prevent someone from going to bed or to sleep
Oxford Dictionary