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
Idiom of the Day
play politics
to negotiate politically, to allow politics to control a situation where principle should prevail
The government leaders were playing politics with the tax issue.