n. 1. A violent attack. 2. An overwhelming outpouring: an onslaught of third-class mail. [Alteration (influenced by obsolete slaughte, slaughter) of Dutch aanslag, a striking at, from Middle Dutch aenslach : aen-, on; see an- in the Appendix of Indo-European roots + slach, a striking.] |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.