scollop

1a :  any of numerous marine bivalve lamellibranch mollusks (family Pectinidae) that have a radially ribbed shell with the edge undulated and that swim by opening and closing the valvesb :  the adductor muscle of a scallop as an article of food

2a :  a valve or shell of a scallopb :  a baking dish shaped like a valve of a scallop

3 :  one of a continuous series of circle segments or angular projections forming a border (as on cloth or metal)

4 :  pattypan

5 [French escalope, probably from Middle French, shell] :  a thin slice of boneless meat or fish veal scallops —called also escalope