1. cusp - Noun
2. cusp - Verb
A triangular protection from the intrados of an arch, or from an inner curve of tracery.
The beginning or first entrance of any house in the calculations of nativities, etc.
The point or horn of the crescent moon or other crescent-shaped luminary.
A multiple point of a curve at which two or more branches of the curve have a common tangent.
A prominence or point, especially on the crown of a tooth.
A sharp and rigid point.
To furnish with a cusp or cusps.
Source: Webster's dictionaryWe are on the cusp of this time where I can say, "I speak as a citizen of the world" without others saying, "God, what a nut." Lawrence Lessig
We in our present generation stand on the cusp of a new and glorious dawn when mastery of these energies lies fully within our grasp as secret yields to inquiry, which yields to experimentation, which leads to verification and duplication, which, in the final course, leads to knowledge. Stephen R. Lawhead
It's about a girl who is on the cusp of becoming someone.. A girl who may not know what she wants right now, and she may not know who she is right now, but who deserves the chance to find out. Jodi Picoult
What I'm suggesting to you is that this could be a renaissance. We may be on the cusp of a future which could provide a tremendous leap forward for humanity. Jeremy Rifkin
The world is poised on the cusp of an economic and cultural shift as dramatic as that of the Industrial Revolution. Steven Levy
I recently lost 50 pounds. I'm hovering on the cusp of a size eight, which seems unbelievable. Kathy Najimy