[ kʌsp ]
■ noun
1》 a pointed end where two curves meet.
↘each of the pointed ends of the crescent moon.
↘a cone-shaped prominence on the surface of a tooth.
↘ Architecture a projecting point between small arcs in Gothic tracery.
2》 Mathematics a point at which the direction of a curve is abruptly reversed.
3》 Astrology the initial point of an astrological sign or house.
↘a point of transition between two different states: those on the ~ of adulthood.
4》 Anatomy a pocket or fold in the wall of the heart or a major blood vessel, forming part of a valve.
Derivatives
~ate adjective
~ed adjective
~ing noun
Origin
C16: from L. ~is 'point or apex'.