scallop (Noun) — One of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.).
scallop (Noun) — Edible muscle of mollusks having fan-shaped shells; served broiled or poached or in salads or cream sauces.
scallop (Noun) — Thin slice of meat (especially veal) usually fried or broiled.
scallop (Noun) — Edible marine bivalve having a fluted fan-shaped shell that swim by expelling water from the shell in a series of snapping motions.
scallop (Verb) — Decorate an edge with scallops. ex. "the dress had a scalloped skirt"
scallop (Verb) — Bake in a sauce, milk, etc., often with breadcrumbs on top.
scallop (Verb) — Form scallops in. ex. "scallop the meat"
scallop (Verb) — Fish for scallops.
scallop (Verb) — Shape or cut in scallops. ex. "scallop the hem of the dress"