1. [n]  edible marine bivalve having a fluted fan-shaped shell that swim by expelling water from the shell in a series of snapping motions
2. [n]  thin slice of meat (especially veal) usually fried or broiled
3. [n]  edible muscle of mollusks having fan-shaped shells; served broiled or poached or in salads or cream sauces
4. [n]  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.)
5. [v]  shape or cut in scallops, as of the edge of a garment
6. [v]  fish for scallops
7. [v]  form scallops in
8. [v]  decorate an edge with scallops, as of a dress

1. \Scal"lop\ (?; 277), n. [OF. escalope a shell, probably
   of German or Dutch origin, and akin to E. scale of a fish;
   cf. D. schelp shell. See {Scale} of a fish, and cf.
   {Escalop}.] [Written also {scollop}.]
   1. (Zo["o]l.) Any one of numerous species of marine bivalve
      mollusks of the genus Pecten and allied genera of the
      family {Pectinid[ae]}. The shell is usually radially
      ribbed, and the edge is therefore often undulated in a
      characteristic manner. The large adductor muscle of some
      the species is much used as food. One species ({Vola
      Jacob[ae]us}) occurs on the coast of Palestine, and its
      shell was formerly worn by pilgrims as a mark that they
      had been to the Holy Land. Called also {fan shell}. See
      {Pecten}, 2.
   Note: The common edible scallop of the Eastern United States
         is {Pecten irradians}; the large sea scallop, also used
         as food, is {P. Clintonius, or tenuicostatus}.
   2. One of series of segments of circles joined at their
      extremities, forming a border like the edge or surface of
      a scallop shell.
   3. One of the shells of a scallop; also, a dish resembling a
      scallop shell.
   

2. \Scal"lop\, v. t. [imp. & p. p. {Scalloped}; p. pr. &
   vb. n. {Scalloping}.]
   1. To mark or cut the edge or border of into segments of
      circles, like the edge or surface of a scallop shell. See
      {Scallop}, n., 2.
   2. (Cookery) To bake in scallop shells or dishes; to prepare
      with crumbs of bread or cracker, and bake. See {Scalloped
      oysters}, below.
   

A medium-level language for CDC computers, used to bootstrap the first Pascal compiler.