Im still waiting for the answer to DB.
Data Base, Disability, Decibel, Deutsche Bahn, Decibels, Dragon Ball, Data Bus, Date of Birth, Dual Band, Development Bank, David Bowie (one of my favorites), Design Based, Damage Bonus, Data Byte, Dead Body, Dubnium, Defined Benefit.....
I'd have added more but I've got to go out on the bike to an appt. Hope that helps.