from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Football A kickoff in which the ball carries just far enough, at least ten yards, to be recovered legally by the kicking team.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of on-side kick.
from the GNU version of the Collaborative International Dictionary of English
- A kickoff in which the kicking team attempts to kick the ball only so far as is legally required (beyond the 50-yard line), so as to have a better chance to recover the kicked ball itself; -- it is a risky type of play used only when the kicking team is losing and there is little time left to play.
Sorry, no etymologies found.