1. thumper - Noun
2. Thumper - Proper noun
One who, or that which, thumps.
Source: Webster's dictionaryNicknamed "The Kid", "The Splendid Splinter", "Teddy Ballgame", "The Thumper" and "The Greatest Hitter Who Ever Lived", Williams is regarded as one of the greatest hitters in baseball history. Source: Internet
The tank went into trials in 1987–88. citation * M1 Thumper: Experimental variant by Lockheed Martin, equipped with the 140 mm XM291 ATACS smoothbore cannon. Source: Internet