Is chimichangas a Spanish or English word?

"Chimichanga" is not a Spanish word. It's actually a made-up word created in the United States.

The origin of the word is debated, but the most common story involves a restaurant owner in Arizona who accidentally dropped a burrito into a deep fryer. He jokingly called it a "chimichanga," which may have been inspired by the Spanish word "chimichurri," a type of marinade.

While the word itself isn't Spanish, the dish it describes is a variation of the Mexican burrito.