The term 'Part of a Football Helmet' can be broken down into two crossword solutions: STRAP (5 letters) and ChinStrap (9 letters). A STRAP is a piece of material used to secure or fasten something, while a chin STRAP is a STRAP that goes under the chin and is used to secure a helmet to the head. Both straps are important components of a football helmet, as they help keep the helmet in place and protect the player's head from injury.