windage allowance

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windage — n. 1 the friction of air against the moving part of a machine. 2 a the effect of the wind in deflecting a missile. b an allowance for this. 3 the difference between the diameter of a gun s bore and its projectile, allowing the escape of gas … Useful english dictionary
List of United States Marine Corps acronyms and expressions — This is a list of acronyms, expressions, euphemisms, jargon, military slang, and sayings in common or formerly common use in the United States Marine Corps. Many of the words or phrases have varying levels of acceptance among different units or… … Wikipedia
wind gauge — noun a gauge for recording the speed and direction of wind • Syn: ↑anemometer, ↑wind gage • Derivationally related forms: ↑anemometric (for: ↑anemometer), ↑anemometrical (for … Useful english dictionary
Glossary of nautical terms — This is a glossary of nautical terms; some remain current, many date from the 17th 19th century. See also Wiktionary s nautical terms, Category:Nautical terms, and Nautical metaphors in English. Contents: A B C D E F G H I J K L M N O P Q R … Wikipedia
point blank — 1570s, from POINT (Cf. point) (v.) + BLANK (Cf. blank) (n.), the white center of a target. The notion is of standing close enough to aim (point) at the blank without allowance for curve, windage, or gravity … Etymology dictionary

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