Scallop  (also scollop) —n. 1 edible mollusc with two fan-shaped ridged shells. 2 (in full scallop shell) single shell of a scallop, often used for cooking or serving food in. 3 (in pl.) Ornamental edging of semicircular curves. —v. (-p-) ornament with scallops.  scalloping n. (in sense 3 of n.). [french *escalope]