Food & Drink:
* Alligator pear: Avocado (from Spanish *aguacate*)
* Anchovy: A small fish (from Spanish *anchova*)
* Barbecue: A method of cooking (from Spanish *barbacoa*)
* Bonanza: A sudden, unexpected piece of good fortune (from Spanish *bonanza*)
* Cacao: The raw material for chocolate (from Spanish *cacao*)
* Cigarette: A small roll of tobacco (from Spanish *cigarro*)
* Cocoa: A chocolate drink (from Spanish *cacao*)
* Corn: Maize (from Spanish *maíz*)
* Gaucho: A South American cowboy (from Spanish *gaucho*)
* Habanero: A very spicy chili pepper (from Spanish *habanero*)
* Jalapeño: A mild chili pepper (from Spanish *jalapeño*)
* Marmalade: A preserve made from citrus fruit (from Spanish *marmalade*)
* Mojo: A sauce common in Cuban cuisine (from Spanish *mojo*)
* Siesta: An afternoon nap (from Spanish *siesta*)
* Taco: A Mexican food consisting of a tortilla filled with various ingredients (from Spanish *taco*)
* Tortilla: A thin, unleavened flatbread (from Spanish *tortilla*)
* Vanilla: A flavoring derived from an orchid (from Spanish *vainilla*)
Places & People:
* Alcatraz: An island in San Francisco Bay (from Spanish *alcatraz*)
* Canyon: A deep, narrow valley (from Spanish *cañón*)
* Colorado: A state in the western United States (from Spanish *colorado*)
* Fiesta: A celebration or festival (from Spanish *fiesta*)
* Lasso: A rope used to catch cattle (from Spanish *lazo*)
* Mesa: A flat-topped hill (from Spanish *mesa*)
* Rancho: A large estate (from Spanish *rancho*)
* Rodeo: A competition involving cowboys (from Spanish *rodeo*)
* Siesta: An afternoon nap (from Spanish *siesta*)
* Sombrero: A wide-brimmed hat (from Spanish *sombrero*)
Other:
* Adobe: Sun-dried brick (from Spanish *adobe*)
* Bravo: An exclamation of approval (from Spanish *bravo*)
* Cabana: A small, often temporary, hut or shelter (from Spanish *cabaña*)
* Cacography: Bad spelling (from Spanish *cacografía*)
* Calabash: A gourd used as a container (from Spanish *calabaza*)
* Canteen: A container for carrying water (from Spanish *canteen*)
* Casino: A gambling establishment (from Spanish *casino*)
* Cigarette: A small roll of tobacco (from Spanish *cigarro*)
* Cochineal: A red dye extracted from insects (from Spanish *cochinilla*)
* Commodore: A naval officer (from Spanish *comodoro*)
* Conquistador: A Spanish conqueror (from Spanish *conquistador*)
* Dynamite: A powerful explosive (from Spanish *dinamita*)
* Guitar: A musical instrument (from Spanish *guitarra*)
* Hurricane: A tropical storm (from Spanish *huracán*)
* Mosquito: A small flying insect (from Spanish *mosquito*)
* Patio: An outdoor area next to a house (from Spanish *patio*)
* Pinafore: A child's dress (from Spanish *pinafore*)
* Poodle: A breed of dog (from Spanish *poodle*)
* Siesta: An afternoon nap (from Spanish *siesta*)
* Tornado: A powerful rotating column of air (from Spanish *tornillo*)
* Valet: A person who looks after another person's clothes or luggage (from Spanish *valet*)
* Vanilla: A flavoring derived from an orchid (from Spanish *vainilla*)
This list is not exhaustive, and there are many other English words with Spanish origins.