rah-rah

Etymology
Repetition of, as used in cheering at sporting competitions.

Adjective

 * 1) Marked by noisy enthusiasm.

Interjection

 * 1) An expression of enthusiasm, expressed by high school and college cheerleaders at sporting events.

Noun

 * 1) A pleated miniskirt, so named because of the resemblance to skirts typically worn by high school and college cheerleaders, who normally chant "rah-rah" at sporting events.