BVDs (n.)youdaoicibaDictYouDict[BVDs 词源字典]
"men's underwear," 1935, from trademark name (dating to 1876) of manufacturer Bradley, Voorhees, and Day.[BVDs etymology, BVDs origin, 英语词源]
DVDyoudaoicibaDictYouDict
1995, initialism (acronym) from Digital Video Disc, later changed to Digital Versatile Disc.
Earlier this year, electronics giant Toshiba positioned the first DVD players available in the U.S. as a home entertainment unit (retail price $600). ["Black Enterprise" magazine, June 1997]