Biologist Banker?
jar
Big dipper is an outer space word. Black hole is another outer space word that begins with the letter b.
Belated is a synonym for late. It begins with the letter b.
Blasphemously is a long word. It begins with the letter b.
Black Tie affair.
bother (Don't worry...don't bother yourself about it...)
Basketball player
Boolean.
Baso
Bosun's mate is a Naval job.
A 4 letter word that begins with B is bend.
But U