a barrel of beer is 31 gallons and a barrel of oil is 42 gallons
Microsoft Computer Dictionary
n. Acronym for be back later. An expression used commonly on live chat services on the Internet and online information services to indicate that a participant is temporarily leaving the discussion forum but intends to return at a later time. See also chat1 (definition 1).
File Extension Dictionary
TeX/BibTeX Bibliographic Reference File
Oil and Gas Field Glossary
Barrel
Oil and Gas Field Glossary
bblBarrel (bbl), a standard measure for oil and oil products. One barrel = 35 imperial gallons, 42 US gallons, or 159 litres.