Pronunciation: (wun'tOO'), [key]
1. Also called one'-two' punch". Boxing.a left-hand jab immediately followed by a right cross.
2. Informal.any strong or effective combination of two people or things: The old one-two of a good passer and a good receiver is the best way to win football games.
3. Fencing.a type of attack made up of two movements.
employing or suggesting a one-two; with one major or powerful thing or person combined with or following another.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.