hype man
n.— «Hammer and the Posse, a group consisting of four dancers, two DJs and one “hype man” (“He’s the guy who pumps the crowd up,” Hammer explained), hope to win over rap fans.» —“M.C. Hammer Nails Down A Royal Reputation” by Lee Hildebrand San Francisco Chronicle Apr. 3, 1988. (source: Double-Tongued Dictionary)
Further reading
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...
One of the celestial bodies listed in The Dictionary of Minor Planet Names(Amazon) is called Sumaura. It’s the name of the oldest private elementary school in Kobe, Japan, and was suggested by the discoverer’s son. This is part of a...