A Crump was the universal name for a heavy shell from the sound of its "burst" on impact. An officer writes: “The crump goes off with a terrifying double explosion and makes a great hole in the ground.” 
The term "to crump" meant to bombard with heavy shells. See also Barrage.
- Edward Fraser and John Gibbons (1925). Soldier and Sailor Words and Phrases. Routledge, London p.68.
Glossary of words and phrases[edit source]
The above term is listed in our glossary of words and phrases of the Armed Forces of Great Britain during the Great War. Included are trench slang, service terms, expressions in everyday use, nicknames, the titles and origins of British and Commonwealth Regiments, and warfare in general. These words and phrases are contemporary to the war, which is reflected in the language used. They have been transcribed from three primary sources (see Contents). Feel free to expand upon and improve this content.
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