Dictionary
head•spring
Pronunciation: (hed'spring"), [key]—
n.
1. the fountainhead or source of a stream.
2. the source of anything.
3. an acrobatic feat similar to a handspring, except that the head as well as the hands touch the surface before the spring back to a standing position.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.