Wonderful Word Wednesday: Cusp

It's Wonderful Word Wednesday and I have a really useful word today!

cusp
noun
1.) a point or pointed end.
2.) Anatomy, Zoology, Botany. a point, projection, or elevation, as on the crown of a tooth.
3.) Also called spinode. Geometry. a point where two branches of a curve meet, end, and are tangent.
4.) Architecture. a decorative device, used especially in Gothic architecture to vary the outlines of intradoses or to form architectural foils, consisting of a pair of curves tangent to the real or imaginary line defining the area decorated and meeting at a point within the area.
5. Astronomy. a point of a crescent, especially of the moon.

Example Sentence: Matt crouched in the cusp of the tree, gripping a branch with one hand and letting his bloody shoulder droop.

Have you seen or used this word before? What do you think of it?

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