from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The seaward return of water after the landward motion of a wave. Also called backwash.
Sorry, no etymologies found.
As he sat on the steps of the landing-stage ruminating he grew conscious of the tall, dark streak of a sail coming silently down the shining river, and sprang to his feet with such a backrush of feeling that he almost wept.
Vista Gold and SP1, and Server 2008 allows remote SMB servers to execute arbitrary code on a client machine by replaying the NTLM credentials of a client user, as demonstrated by backrush, aka "SMB Credential Reflection Vulnerability."