buckle (clasp)
Brooches were also used in earlier times. Buttons are contemporary closures.
there is a bratz doll starting with B. she is called Breeana
blast or burst
Bison, Boar, Bull
If it is starting with b, it should be called board or boarding!
Barrier
I have found one called BIOCHEMICAL ENERGY...
A comby tie is also called a bolo.
they are called Beats they are the best headphones ever
Some things (nouns) that start with the letter B are:baboonbabybaconbagballballoonballroombarbargainbarnbarrelbasketballbathtubbeachbeaconbeaglebeanbedbeefbeetbellbeltbenchbirdbirthdayboatbonnetbookbootbouquetbowlbrainbranchbridebroachbookbrookbucketbuffalobuffoonbulletbunchbundleburdenbulgeburglarburnbutlerbutterbutton
The common breafast bread roll is called "la baguette" (the stick).
Tags with companions are called companion tags. An example is <b></b>. The companion tag is the tag that turns off the effect set my the starting tag.
A place starting with b could be brean, burlin, Brazil etc. (hope i helped!)