scallop / scollop ['skɒləp]
scallop - n. 1. a mollusc of the genus Pecten; 2. a vessel resembling these mollucs’ shell; 3. a pilgrim's cockle-shell worn as a sign that he had visited the shrine of St. James at Compostella
scollop – n. – 1. as a variant of scallop; 2. one of a series of rounded pieces, such as roofing tiles forming a border with projections