What does staunched mean?

to stop something happening, or to stop liquid, especially blood, from flowing out: ... Mike pressed hard on the wound and staunched the flow of blood.

Is it stanch or staunch?

“Staunch,” in standard American English, is supposed to be an adjective meaning “faithful” or “steadfast,” as in “France remains a staunch ally of the U.S.” “Stanch” is supposed to be a verb meaning “to stop the flow.”