'barrelful' definitions:

Definition of 'barrelful'

From: WordNet
noun
The quantity that a barrel (of any size) will hold [syn: barrel, barrelful]

Definition of 'barrelful'

From: GCIDE
  • barrelful \barrelful\ n. The quantity that a barrel (of any size) will hold.
  • Syn: barrel. [WordNet 1.5]