Rocks Glass

It is commonly used for muddled drinks (because of the thick bottom) and anything on the rocks.

For example:
Old Fashioned
White and Black Russians
Drinking straight booze on the rocks

Highball Glass

This glass is used for various mixed drinks and highball cocktails (highballs are traditionally just club soda + any spirit, but over the years the definition has loosened. There’s usually more mixer than the alcohol).

For example
Bloody Mary
Gin and Tonic
Screwdriver
Fuzzy Navel

Collins Glass

The highball and the Collins glasses are interchangeable.

For example:
Tom Collins
Long Island Iced Tea
Cape Codder

Martini Glass

For any cocktail or martini.

For example:
Gin Martini
Cosmopolitan
Brandy Alexander

Hurricane Glass

Your fancy lava flow or colorful frozen tropical drink is served in this glass.

For example:
Pina Colada
Hurricane
Lava Flow

Sour Glass

For a sour, which is any drink that includes a base spirit, lemon or lime juice, and a sweetener (and traditionally, egg white).

For example:
Pisco Sour
Kamikaze
Sidecar
Whiskey Sour

Margarita Glass

For frozen drinks like the margarita and also margaritas on the rocks.

For example:
Frozen Lime Margarita
Frozen Strawberry Daiquiri

Moscow Mule Mug

The Moscow Mule mug is a copper mug that keeps its namesake cocktail nice and cold. Find the recipe on Bon Appétit.

Absinthe Glass

An absinthe glass has a thick stem and includes a change or etching in the glass to indicate when you should stop pouring.

Snifter

A snifter is generally used for brandy or whiskey. The large bottom allows for someone to warm the glass with their hand and also for faster evaporation. The tapered top traps the aroma. You should fill the glass just enough so that if you were to tip it on its side no liquid would spill out.

Champagne Flute

Also called a tulip glass. Champagne flutes are designed so that you don’t affect the temperature of the champagne while you hold the glass. The glass is narrow to perserve carbonation.

Champagne Coupe

You might recognize these glasses from the awesomeness that is a champagne tower, wherein bubbly is poured into the top glass until it trickles down into all the others. Unfortunately, the broad lip of a coupe glass allows the champagne to lose carbonation more quickly than a flute glass — so they are more often used for cocktails. Martini glasses and coupes are interchangeable for cocktails; it’s all about style.

Cordial Glass

This is basically a shot glass on a pedestal — but the after-dinner drinks or liqueurs served in it are meant for sipping.

Sherry Glass

The sherry glass, or “copita,” has a narrow brim to enhance the aroma of sherry. You can also drink liqueur or port out of it.

Bordeaux Glass

Bordeaux glasses have a broad bowl and long stem. They are typically used for full-bodied wines like Cabernet Sauvignon.

Burgundy Glass

Burgundy glasses are broader than Bordeaux glasses in order to better assemble the aroma. This glass is used for more delicate wines, including Pinot Noir.