• (n.) Fishing for scallops. • (p. pr. & vb. n.) of Scallop
A series of indentations or erosions on a normally smooth margin of a structure. ... (05 Mar 2000) ... 
Decorating the double edge of a pastry pie with small horizontal cuts which are pulled up with the back of a knife to form a scalloped effect.
Scal'lop·ing noun Fishing for scallops. 
Type: Term Pronunciation: skal′ŏp-ing Definitions: 1. A series of indentations or erosions on a normally smooth margin of a structure.
in reference to the lateral aspect of the pedipalp chela fingers, when the margins of one or more of the denticle rows are concave (rather than straight). Scalloping of the basal denticle row of the fixed finger often corresponds to the development of a lobe on the movable finger.