Dt: Duck tape for your Unix pipes
This article links to <a href="https://en.wikipedia.org/wiki/Vesta_Stoudt" rel="nofollow noreferrer">https://en.wikipedia.org/wiki/Vesta_Stoudt</a>, which links to <a href="https://en.m.wikipedia.org/wiki/Cotton_duck" rel="nofollow noreferrer">https://en.m.wikipedia.org/wiki/Cotton_duck</a>, which explains that the word "duck" here comes from the Dutch <i>doek</i>, or "linen canvas".