cor·bie-step also cor·bie·step 
(kôrbē-stĕp′)
(kôrbē-stĕp′)n.
One of a series of stepped masonry projections rising above roof level along the sides of a gable wall.
[Middle English corbie, raven, from Old French corbin, from Latin corvīnus, ravenlike; see CORBINA.]
corbie-stepcorbie-steps on the gables
of Market Square buildings
Bruges, Belgium