crenel Meaning and Definition

1. n. a notch or open space between two merlons in a crenelated battlement

2. n. 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.)

3. v. supply with battlements