What does “savvy” mean?

Savvy or savvey is an American corruption of Spanish sabe, a form of the verb saber, meaning “to know.” “Do you savvy?” is equivalent to Spanish “gSabe Usted?” Both mean, “Do you know?” Savvy was originally acquired from the Mexicans by early ranchers in the Southwest who spelled and pronounced the word savvy rather than sabe because in Spanish b and v are pronounced almost alike and in many words are used interchangeably. When employed as a noun savvy means understanding, mental grasp or knowledge of affairs. Of course it is slang in all senses.