Not sure if you mean a belt (goes directly on your trousers) or suspenders (these go over your shoulders and hold the pants up by use of a pair of clips or buttons).
They are called suspenders, straps or a belt.
Straps that hold up your pants are called suspenders, straps, or belts.
If I'm thinking correctly, BELT is a four letter word, and it holds up your pants :)
Suspenders.
the pole that holds up the sail is called the mast
fancy pants
overall.
an easel
The 7 Islands in the Pacific we've won Okinawa, Guam, Tarawa, Iwo Jima ect
Filament.
Gun rack
The fuzz that collects in a pants cuff is commonly known as lint. It is made up of fibers from the fabric of the pants as well as from other items that it may have come into contact with during wear or washing.