Pronunciation: [ɹˈɒks ɡlˈasɪz] (IPA) 
The correct spelling of "rocks glasses" is /rɑks ˈɡlæsəz/. The word "rocks" refers to ice cubes, while "glasses" indicates that they are drinking vessels. The pronunciation of "rocks" includes a short "o" sound as in "pot", followed by a "ks" sound. "Glasses" is pronounced with a hard "g" as in "goat", and the vowel sound is similar to the "a" in "cat". The plural form, "glasses", is indicated by the final "-es" sound.
Rocks glasses, also commonly known as lowball glasses or old-fashioned glasses, are a type of drinking glassware primarily used for serving spirits or cocktails over ice. These glasses are designed with a wide and sturdy base, which tapers towards the top, allowing the beverage to be comfortably held and appreciated.
Typically holding between 6 to 10 ounces (approximately 180 to 300 milliliters) of liquid, rocks glasses are known for their short and squat shape, making them versatile for various types of beverages. The name "rocks" is derived from the common practice of serving whiskey or other spirits "on the rocks," meaning over ice cubes.
These glasses are favored for serving drinks that require minimal dilution but still benefit from the chilled properties of the ice. As the wide base of the glass allows the ice cubes to sit evenly, they help to keep the beverage cool without rapidly melting and diluting the flavors. This feature makes rocks glasses ideal for enjoying spirits neat or with a small splash of water, as well as for classic cocktails like the Old Fashioned or Negroni.
Rocks glasses are usually crafted from thick and durable glass or crystal to withstand muddling or stirring with a cocktail spoon. Their sturdy construction and wide shape also make them ideal for holding and enjoying cocktails that include garnishes such as citrus peels, cherries, or herbs. The design of rocks glasses helps enhance the aroma and flavor of the beverage within, making them an essential piece of glassware for any home or professional bar.
The term rocks glasses refers to a specific type of glassware commonly used for serving spirits or cocktails over ice cubes, also known as on the rocks. The etymology of the word is straightforward and derived from the usage itself. Rocks is a slang term for ice cubes, and glasses refers to the vessel used for drinking or serving beverages. Therefore, the term rocks glasses essentially means glasses for serving drinks with ice cubes.
