A thing in its entirety, with nothing omitted.

Entirely.

(idiomatic) To settle for a poor option due to a lack or unavailability of anything better

A cylindrical push-and-twist connector for thin coaxial cable.

Alternative spelling of double-barrelled shotgun

plural of barrel nut connector

(architecture) A vault resulting from the intersection of two barrel-vaults crossing in a right angle. Its thrusts are concentrated along the groins or arrises and eventually at the four corners

plural of double barrel vault

Alternative form of cash on the barrelhead

Alternative form of cash on the barrelhead