1.A plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the cone or by the locus of points equidistant from a fixed line and a fixed point not on the line.
2. A guys dick. Term ushually used in math class when working on Parabola's on the graphing calculator and used in funny situations with the math teacher, Mr.Zobel and surounding boys.
"Can i feel your parabola?"
"Man your parabola is huge!"
"Did you see Austin's parabola in math today? It was soooo big!"
"Man Josh went to work on his Parabola today! Did you see him?"