Whisky Smash
From The Oxford Companion to Spirits & Cocktails
is a member of the julep-like smash family that had its heyday in the nineteenth century, though even then it was less popular than the Brandy Smash. See julep; smash;, Brandy Smash.
This definition is from The Oxford Companion to Spirits & Cocktails, edited by David Wondrich (Editor-in-Chief) and Noah Rothbaum (Associate Editor).