a barrel filled with explosives, used as an improvised unguided bomb and dropped from a helicopter or airplane

(figuratively) A very cheery and happy person.

plural of barrel bomb

(poker) The act of bluffing on the flop, turn and river in the same round.

(poker) To make a triple barrel bluff.

(Canada, US) A barrel used to collect and store rainwater runoff, typically from rooftops via gutters.

Alternative spelling of rain barrel

plural of barrel organist

plural of barrel-head

plural of barrel bulk