Margarita (noun)

1. A cocktail typically made with tequila, lime juice, and triple sec, served in a salt-rimmed glass.
2. A cocktail made of tequila, lime juice and triple sec.

Origin:

From spanish margarita, diminutive of margarito, from mar ("sea") + garito ("pearl"), because of the salt rim of the glass.

Examples:

1. She ordered a margarita on the rocks.
2. The Margarita is a classic cocktail that originated in Mexico.
3. They serve the best margaritas in town at that bar.
4. The frozen margarita is a popular summer drink.
5. I'll have a margarita, and make it a double.