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
mistake (someone or something) for (someone or something) else
to think that someone or something is someone or something else
I mistook my friend's sister for someone else when I went to the airport. I often mistake one car for another car when I see them on the street.