babysit
v.— «Some airline industry officials said the proliferation of smaller planes is also a result of airlines’ efforts to protect their slots. In a practice known as “baby-sitting” slots, they are scheduling more frequent flights than they need to certain destinations to ward off competition, the officials said.» —“Agency Seeks New Solution to Congestion at La Guardia” by Patrick McGeehan New York Times Aug. 26, 2006. (source: Double-Tongued Dictionary)