Definition from Wiktionary, the free dictionary
- Abbreviation of Open(ing) Of Business. (It is usually referring to a time frame margin.)
- ...between OOB January 1, 2007 and COB December 31, 2007.
- The word boo spelled backwards usually used when the word "boo!" has been claimed to be the property of another.
- Abbreviation of out of the box.
- SOB start of business