a point or pointed end.

Anatomy, Zoology, Botany . a point, projection, or elevation, as on the crown of a tooth.

Also called spinode. Geometry . a point where two branches of a curve meet, end, and are tangent.

Architecture . a decorative device, used esp. 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.

Astronomy . a point of a crescent, esp. of the moon.

Astrology .

the zodiacal degree that marks the beginning of a house or a sign.

Informal . a person born on the first day of a sign.

a point that marks the beginning of a change

on the cusp of a new era.

noun

acicula , acumination , apex , mucro , mucronation , tip , angle , corner , end , flap , fold , horn , peak , point , tooth