twist
From The Oxford Companion to Spirits & Cocktails
is a strip of citrus zest used as a cocktail garnish. Its name derives from the twisting it receives to express its oils before being dropped into a drink. See zest, citrus.
This definition is from The Oxford Companion to Spirits & Cocktails, edited by David Wondrich (Editor-in-Chief) and Noah Rothbaum (Associate Editor).