n pointed end where two curves meet （两弧线相交所形成的）尖端
*the cusp of a crescent/a leaf 月牙[叶子]的尖端.
1500-1600; Language: Latin;Origin:
the point formed where two curves joinbe on the cusp of sth [singular]
to be at the time when a situation or state is going to change The country was on the cusp of economic expansion.on the cusp
someone who was born on the cusp was born near the time when one star sign
ends and another begins