"Small barrels" refers to containers that are smaller in size compared to regular barrels and are typically used to store or transport goods. Full definition
As Argonne 2008 is made and aged in small barrels made of oak from the forest of Argonne, Champagne Henri Giraud selects each individual tree. (thedrinksreport.com)
While you've always been told to use small barrel curling irons for small curls and larger barrels for large curls, this tutorial throws those theories out the window. (goodhousekeeping.com)