n.
1.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.)
2.a notch or open space between two merlons in a crenelated battlement crenel v.
1.supply with battlements
Idiom of the Day
caught short
to not have enough of something (usually money) when you need it
I was caught short last month and could not pay my credit card bill.