Definition of blam
: a sudden loud noise : bang Down came Kitty on the ice with a frightening blam. — Bob Ottum, Sports Illustrated, 30 Jan. 1984 —usually used as an interjection With a final dive, he pushed the handle down. Blam! The ground shook from the explosion … — Al Franken, Playboy, March 1996
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First Known Use of blam
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