Emily Dickinson Lexicon

SCAL'LOP, n. [This is from the root of shell, scale; coinciding with scalp, D. schulp, a shell.]

1. A testaceous molluscum 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. – Encyc.
2. A recess or curving of the edge of any thing, like the segment of a circle; written also Scollop.