[a. 16th c. F. (h)arquebuse (-bute, etc.). The MHG. hake
bühse, MLG. hakebusse (see HACKBUSH), was transformed in It., by popular etymology, into arcobugio, -buso (arco bow + bugio, buso 'hollow, hole', in reference to the hollow barrel, and to its taking the place of the bow or arbalest), also later archibugio, -buso (cf. Sp. arcabuz); under the influence of the It., the earlier French name haquebute (see HACKBUT) was changed through the intermediate harquebute, harquebuse, to arquebuse. These French forms were in turn adopted in English, where also the influence of the earlier hackbush, hagbush, gave rise to the mixed forms harquebush, hargubush, harguebusse, etc.]
1. The early type of portable gun, varying in size from a small cannon to a musket, which on account of its weight was, when used in the field, supported upon a tripod, trestle, or other 'carriage', and afterwards upon a forked 'rest'. The name in German and Flemish meant literally 'hook-gun', from the hook cast along with the piece, by which it was fastened to the 'carriage'; but the name became generic for portable fire-arms generally in the 16th century, so that the type with the hook was subsequently distinguished as arquebuse à croc: