Also, at one blow; at a stroke or blow; in one stroke or blow. At the same time, with one forceful or quick action. For example, I managed to please both buyer and seller at one stroke. The first term is the older version, so used by Chaucer; at one blow was used by Shakespeare.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.