screamer
n.— Note: In print journalism, “screamer” can also refer to a large, bold headline. «The exclamation mark—or “screamer,” as it is sometimes called by journalists—is often derided as the most brash and vulgar of punctuation marks.» —“ Let’s hope an exclamation mark is enough to save Geoff Hoon!” by Craig Brown Telegraph (United Kingdom) July 5, 2008. (source: Double-Tongued Dictionary)