Putting a "B" in your Bonnet
This flat hat is the Basque equivalent of the Scottish tam-o'-shanter
beret
Adjective for a job of less than a standard number of hours a week
part-time
The Encyclopedia Britannica notes that break-dancers often wear these "sideways or backward"
Baseball Caps
It describes a man's smooth face with all its whiskers removed
clean-shaven
Oddjob in "Goldfinger" wore this type of hat
Bowler
There's no "-proof" in this adjective often seen on kids' PJs & meaning designed to fend off flames
fire-resistant
These guardians of the Tower of London AKA Yeoman Warders wear a Tudor-period uniform that includes a black hat
Beefeaters
Hyphenated adjective for "gains" made criminally or unfairly
ill-gotten
This men's hat of the Napoleonic era has a name meaning "two-horned"
Bicorne
Adjective for one who always seems to have a greater than average number of mishaps
accident-prone