Definition of "DB"
DB
noun
plural DBs
(American football, Canadian football) Initialism of defensive back.
(databases) Initialism of database.
(US, military) Initialism of depot brigade.
(UK, pensions) Initialism of defined benefits.
(television) Initialism of delayed broadcast.
proper noun
(rail transport) Initialism of Deutsche Bahn. (German Railways). Previously used by its predecessor, Deutsche Bundesbahn.