skylock
n.β Β«After a cursory examination, the chief of the contractorβs crew, which had been repairing the buildingβs facade, said that a βskylockββthe brake on one of the scaffoldβs twin motorsβhad apparently failed, leading to the one-sided collapse. But that was a judgment that would ultimately be left to city investigators.Β» ββSudden Drama at the Window, With Workmen Dangling” by Robert D. Mcfadden New York Times: City Room (New York City) Mar. 27, 2008. (source: Double-Tongued Dictionary)