cusp

noun

/kʌsp/

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[countable] (specialist) a pointed end where two curves meet（两曲线相交的）尖点，会切点，交点
- the cusp of a leaf叶尖
[singular] the time of change between two different states（黄道十二宫的）两宫会切的时辰
- on the cusp of something two girls on the cusp of adulthood两个即将成年的女孩
- on the cusp between A and B He was on the cusp between small acting roles and moderate fame.他这个配角演员现在已是小荷初露尖尖角。
[singular] the time when one sign of the zodiac ends and the next begins（黄道十二宫的）两宫会切的时辰
- on the cusp between A and B I was born on the cusp between Virgo and Libra.我生于室女宫和天秤宫会切的时辰。

Word Originlate 16th cent. (in sense (2)): from Latin cuspis ‘point or apex’.