barbarrel means the card Barbarian Barrel, a ground-targeting spell that does splash damage in the form of a barrel then spawns a single Barbarian troop upon reaching its destination. Lexicurio rates it Distinctive — a strength score of 68 out of 100.
noun
- The card Barbarian Barrel, a ground-targeting spell that does splash damage in the form of a barrel then spawns a single Barbarian troop upon reaching its destination.“The spawning barbarian is also useful in distracting troops for a few valueable^([sic]) seconds. For example, you can cast Barbarrel on an incoming Executioner, and the spawning barbarian will distract the Executioner long enough for your tower to kill it.”