OOB adjective 6noun 4 adjective6 •Initialism of out of bounds. •Initialism of out of the box. •Initialism of out-of-band. •Initialism of out of bed. •Initialism of out-of-body. •Initialism of off-off-Broadway. noun4 •Initialism of off-off-Broadway. •Initialism of out-of-body. •Abbreviation of Open(ing) Of Business, usually referring to a time frame margin....between OOB January 1, 2007 and COB December 31, 2007. •Initialism of offset overhand bend.