also: チア・ガール
noun
cheerleader
Wasei-eigo from 'cheer girl'; refers to a female cheerleader in sports or events.
wasei-eigo (Japanese-coined English), from cheer girl
彼女は高校のチアガールだった。
She was a cheerleader in high school.
試合の前にチアガールたちが踊った。
The cheerleaders danced before the game.
Also means 'cheerleader' but is a direct loan from English; チアガール is a wasei-eigo term specifically for female cheerleaders.
Wasei-eigo from English 'cheer' + 'girl'.