Crenature

Noun

cren=a=ture

WORDNET DICTIONARY

crenature(n = noun.shape) crenation, crenel, crenelle, scallop - 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.); Array

is a kind of curve, curved shape

Crenature, n.

A rounded tooth or notch of a crenate leaf, or any part that is crenate; -- called also crenelle. [1913 Webster]
The state of being crenated or notched. [1913 Webster]