A Boost: A raid. An attack. A heavy bombardment. As a Navy phrase: To boost – to support anything, a statement, without adequate reason. A booster – one who by false or misleading statements bolsters up a case. Originally an American colloquialism – to lift, or shove up. 
References / notes
- Edward Fraser and John Gibbons (1925). Soldier and Sailor Words and Phrases. Routledge, London p.33.
Glossary of terms and customs
This page forms part of our glossary of words and phrases of the Armed Forces of the United Kingdom of Great Britain during the Great War, which also includes: technicalities, trench slang, expressions in everyday use, nicknames, sobriquets, the titles and origins of British and Commonwealth Regiments, and warfare in general. Please feel free to help expand and improve this content.
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