Double-barreled \Dou"ble-bar`reled\, or -barrelled \-bar`relled\ , a. Having two barrels; -- applied to a gun.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Barrel \Bar"rel\ (b[a^]r"r[e^]l), v. t. [imp. & p. p. Barreled (-r[e^]ld), or Barrelled; p. pr. & vb. n. Barreling, or Barrelling.]

To put or to pack in a barrel or barrels.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Barreled \Bar"reled\, Barrelled \Bar"relled\, a. Having a barrel; -- used in composition; as, a double-barreled gun.

Source: Webster's Revised Unabridged Dictionary (1913)