In fencing, touché (French pronunciation: [tuʃe]), the French word for "touched", is used to acknowledge a hit[1], called out by the fencer who is hit. Conversely, if a fencer concedes a hit when no hit was actually made, the fencer's adversary would say, "'pas de touche'" (French pronunciation: [pɑ də tuʃe]; English: "no touch") to indicate that the hit should not be counted.[2]
The word "touché" is also often used in popular culture and general conversation — for example, in an argument or debate — to commend someone on a clever response to an argument.[3]
the above definition is from wiki http://en.wikipedia.org/wiki/Touch%C3%A9
