also: ファウルカップ
noun
groin protector; protective cup
Wasei-eigo term used in sports such as baseball or martial arts for a hard cup worn to protect the groin area.
wasei-eigo (Japanese-coined English), from foul cup
野球のキャッチャーはファールカップを着用する。
Baseball catchers wear a protective cup.
Wasei-eigo from English 'foul cup', referring to a protective cup worn in sports.