Scallop
SCAL'LOP, noun [This is from the root of shell, scale; coinciding with scalp.]
1. A shell fish, or rather a genus of shell fish, called pecten. The shell is bivalvular, the hinge toothless, having a small ovated hollow. The great scallop is rugged and imbricated with scales, grows to a large size, and in some countries is taken and barreled for market.
2. A recess or curving of the edge of any thing, like the segment of a circle; written also scallop
SCAL'LOP, verb transitive To mark or cut the edge or border of any thing into segments of circles.