"sound of something moving rapidly," 1875, imitative. Zip gun "homemade pistol" is attested by 1950.
"metal sleeve fitted into a machine or hole," 1839, from gerundive of bush (n.) "metal lining of the axle hole of a wheel or touch hole of a gun" (1560s), which is from Middle Dutch busse "box" (cognate with the second element in blunderbuss). Bush-metal "hard brass, gun-metal" is attested from 1847.
"Maxim automatic gun," 1899, of imitative origin, soldiers' slang from the Boer War. For the ornamental tuft, see pompom.
1959, trademark name for Israeli-made submachine gun, developed by Usiel Gal (1923–2002), and manufactured by IMI.
1878, type of machine gun named for its inventor, U.S. armaments-maker Benjamin B. Hotchkiss (1826-1885). In Japanese, the word for "stapler" is hotchikisu after the E. H. Hotchkiss Company of Norwalk, Connecticut, U.S., early and prominent manufacturer of staplers (incorporated 1895, name from 1897), which apparently was run by relatives of the gun inventor. The surname (attested from late 15c. as Hochekys) is a variant of Hodgkin.
Old English fuglian "to catch birds," from the source of fowl (n.). Related: Fowled; fowling. Fowling-piece "gun used for shooting wildfowl" is from 1590s.