Bartender's 'ROCKS' is a term used to describe a type of drink served over ICE. It is made by pouring an alcoholic beverage, such as whiskey or vodka, over ICE cubes in a ROCKS glass. The term is derived from the fact that the ICE cubes look like ROCKS in the glass. This type of drink is popular in bars and pubs and is often served with a garnish, such as a lemon or lime wedge. The answer to the crossword puzzle is ICE.