The phrase "gallon drums" refers to large, cylindrical containers that can hold a specific volume measure called a gallon. They are typically made of metal and are used for storing and transporting liquids, such as oil or chemicals.
Sentences with «gallon drums»
A 55 - gallon drum of nuclear waste, which had been improperly packaged, effectively exploded. (sciencedaily.com)
(He likes the stuff you get from a 60 gallon drum at the salad bar.) (epicurious.com)
I had a few mighty fine cookers made out of 55 - gallon drums in my early BBQ days and they work very well. (fieryfoodscentral.com)