Numbers of barrels (casks) transported or sold, or the volume that they represent.
Numbers of venturis in carburetion.
Volumes of crude oil pumped, stored, or sold (in bulk).
A large barrel or cask of indefinite contents, especially one containing from 100 to 140 gallons.
An English measure of capacity for liquids, containing 63 wine gallons, or about 52+¹⁄₂ imperial gallons; a half pipe.