From The Collaborative International Dictionary of English v.0.48 [gcide]:
Corbeling \Cor"bel*ing\, Corbelling \Cor"bel*ling\, n.
Corbel work or the construction of corbels; a series of
corbels or piece of continuous corbeled masonry, sometimes of
decorative purpose, as in the stalactite ornament of the
Moslems.
[Webster 1913 Suppl.]