Definition of "run low" []

• To be spent or finished (verb)

WordNet. Princeton University. 2010.

• "Later, the KC-10 began to run low on fuel, and a strip alert tanker at Blytheville was called on to refuel the KC-10, which in turn, refueled the KC-135."
• "If you find you run low on fuel during your trips, consider getting larger-capacity tanks to replace the standard tanks on your rig."