Definition of hackbut in English:

hackbut

(also haquebut, hagbut)

Pronunciation /ˈhakbʌt/

noun

archaic, historical
  • An early type of portable firearm; = "arquebus".

Origin

Mid 16th century. From Middle French haquebute, haquebouthe, alteration of haquebuse, harquebuse, probably after buter to aim (a gun at a target), to take aim.