This website presents a key to translating Starbusian pidgin Latin (want a mochalattamericanafrappaspressachino?) into English for coffee civilians.
Single Made with just one shot of espresso. This is the normal amount for all Tall-sized drinks except Mocha Valencias and Americanos.
Double Made with two shots. This is the normal amount for all Grande- and hot Venti-sized drinks except Mocha Valencias and Americanos. Also the normal amount for Tall-sized Mocha Valencias and Americanos.
Triple Made with three shots. This is the normal amount for Grande- and Venti-sized Mocha Valencias and Americanos. Also the normal amount for most iced Venti-sized drinks.
Quad Made with four shots. Hope you weren’t planning on sleeping anytime soon.
Ristretto This is so rarely requested that even many baristas don’t recognize it. A normal shot of espresso takes about twenty seconds to pull; a ristretto shot is stopped at fifteen seconds, making a slightly smaller, less bold shot.
(via Kottke)