double-bar·reled adjective ordouble-bar·relled\| ̷ ̷ ̷ ̷|barəld also -ber-\ 1.of a firearm: having two barrels mounted side by side — compare over-and-under 2.: twofold; especially: having a double purpose < our double-barreled desire to make things profitable as well as attractive — Louis Kronenberger >