Definify.com

Webster 1913 Edition

Adj.

Full of obstructions.

[Obs.]

Shak.

barful ‎(not comparable)

barful ‎(plural barfuls)

The amount of people in a bar.
- 1999, Salon It's not funny November
  by the time he figured out that he would not have been required to stand and salute even if "Molly Malone" were the Irish national anthem, he already had a barful of drunken farmers laughing their Guinness-soaked heads off at him.