one fell swoop

Etymology
After Shakespeare, in Macbeth, act iv, scene 3, where Macduff learns his wife and entire family are murdered:
 * Ro. Wife, Children, Servants, all that could be found.
 * Macd. All my pretty ones? Did you say All? Oh Hell-Kite! All? What, All my pretty Chickens, and their Damme At one fell swoope?

The imagery is of a bird of prey ("hell-kite") ransacking a whole nest at one blow, fell meaning "terrible, cruel, savage." In later uses of the expression, the force of the metaphor is reduced or lost.

Noun

 * 1)  One stroke; one action or event that achieves or accomplishes many results.
 * , Episode 16:
 * ...they might be hanging about there or simply marauders ready to decamp with whatever boodle they could in one fell swoop at a moment's notice, your money or your life, leaving you there to point a moral, gagged and garrotted.
 * ...they might be hanging about there or simply marauders ready to decamp with whatever boodle they could in one fell swoop at a moment's notice, your money or your life, leaving you there to point a moral, gagged and garrotted.

Translations

 * Bashkir: һә тигәнсе, күҙ асып йомғансы
 * Catalan: de cop i volta, tot de cop
 * Esperanto:
 * Finnish: yhdellä iskulla,
 * French: ,
 * German: in einem Rutsch,
 * Hebrew:
 * Italian: in un colpo solo
 * Japanese:, ,
 * Polish: za jednym zamachem
 * Portuguese: de uma só vez, de uma só tacada
 * Romanian: dintr-o lovitură
 * Russian:
 * Spanish:
 * Turkish:, ,