cren- +

1. Having a scalloped edge or a surface with rounded projections.
2. With small, rounded teeth, scalloped.

1. A rounded projection from the edge or surface of something such as a plant leaf or a coin.
2. A scalloped edge, or a surface with rounded projections.
3. A medical condition in which the red blood cells shrink and develop multiple indentations and protrusions.

A notch or indentation between crenations.

1. A notch or open space between two merlons in a crenelated battlement or a gap in the top of a castle wall or parapet, used for firing missiles or shooting.
2. 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.).

1. To supply with battlements.
2. Having repeated square indentations like those in a battlement.
3. To provide a structure with battlements or decorative features resembling battlements.

1. The action of constructing ramparts with gaps for firing guns or arrows.
2. A rampart built around the top of a castle with regular gaps for firing arrows or guns.

1. Having a margin with small rounded teeth.
2. Describes plant leaves or shorelines that have a finely scalloped or notched wavy edge.

1. A very small notch or indentation; for example, on a plant's leaf.
2. The condition of having very fine notching or indentations along an edge.