also: チアーリーダー
noun
cheerleader
Refers to a person who leads cheers at sports events, often in a team context. The term is a direct loan from English and is used in Japanese school and professional sports culture.
彼女は高校のチアリーダーです。
She is a cheerleader at her high school.
チアリーダーたちが試合を盛り上げた。
The cheerleaders livened up the game.
Loanword from English 'cheerleader'.