Definitionen
1.NounA fountainhead; a source.
2.NounA basis or foundation.
3.NounA move in which the gymnast places both hands on the mat with the top of the head about 6 inches in front, pushes off with the hands while flipping the legs overhead, and lands on the feet.
4.NounA spring that sits at the top of a mechanism, pushing the internal parts inward.
5.VerbTo perform a headspring.