An example of a touch of death would be Ibuki's sweep close hard kick. Where afterwards she can infinite her opponent to death.
A touch of death is a term for a type of combo, usually associated with Infinites.
Description[]
A touch of death is a type of combo that can end games if a certain initial attack hits. While they are usually associated with other kind of games such as the Marvel vs. Capcom or Super Smash Bros. series some have been known to exist in Street Fighter.
Touch of Death combos can also be used to describe attacks that knockdown from characters that are rather strong at knockdown games such as El Fuerte and Ibuki, as both characters can use ambiguous cross-ups that are capable of ending matches quickly and can bypass most reversals in the game.