1. pointed ends or projections, especially the tips of teeth or the points where two curves meet
Usage: plural of cusp
2. transitional points or moments between two different states or periods
Usage: figurative use
3. boundary lines between astrological signs or houses
Usage: astrology

Examples

• The dentist examined the cusps of her molars for signs of wear.
• The mountain peaks formed sharp cusps against the sky.
• We stand on the cusps of a new era in technology.
• She was born on the cusp between Leo and Virgo.
• The cusps of the crescent moon were clearly visible.
• Historical cusps often mark periods of great change.
• The architect designed the building with dramatic cusps and angles.