(American football) a play in which the opposing team has kicked the football into your end zone

Wikipedia Word definitions in Wikipedia
In American football , a touchback is a ruling which is made and signaled by an official when the ball becomes dead on or behind a team's own goal line (i.e., in an end zone ) and the opposing team gave the ball the momentum, or impetus, to travel over ...

Wiktionary Word definitions in Wiktionary
n. (context American football English) The result of a play (usually a kickoff or punt) in which the ball passes out the back of the end zone or a team otherwise gains possession of the ball in their own end zone.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Touchback \Touch"back`\ (t[u^]ch"b[a^]k`), n. (Football) The act of touching the football down by a player behind his own goal line when it received its last impulse from an opponent; -- distinguished from safety touchdown.

WordNet Word definitions in WordNet
n. (American football) a play in which the opposing team has kicked the football into your end zone