tossing
From The Oxford Companion to Spirits & Cocktails
, also known as “rolling” or “throwing,” is a cocktail-mixing technique in which the ingredients are poured back and forth from a height between two mixing vessels. See mixology, the history of and rolling.See mixology, the history of, rolling.
This definition is from The Oxford Companion to Spirits & Cocktails, edited by David Wondrich (Editor-in-Chief) and Noah Rothbaum (Associate Editor).