BN

n. co-pilot in a U.S. Air Force bomber that is responsible for navigating the airplane and directing it toward the target

BN, Bn or bn may mean:OrganizationsBarisan Nasional (also known as "National Front"), a political coalition in MalaysiaBarnes & Noble, an American specialty retailer specializing in bookstore/coffeeshop venuesBattalion, a type of military unitBrand New, an American rock bandBritish Naturism, a clothes free organization in the United KingdomBurlington Northern Railroad (AAR reporting mark: BN), a former American railroad operating from 1970 to 1995a subsidiary of the Canadian Press, "Broadcast News", a news agency which provides news reports, film and audio clips to radio and television stations in CanadaLa Brugeoise et Nivelles SA., a Belgian railway rolling stock manufacturer, now part of Bombardier Transportation.
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.bn is the Internet country code top-level domain (ccTLD) for Brunei Darussalam. It is administered by Telekom Brunei Berhad, or simply TelBru (formerly known as Jabatan Telekom Brunei).Registrations are made at the third level beneath the second-level domains com.bn, edu.bn, org.bn and net.bn.
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This article is about a type of military unit. For the Texas A&M student newspaper, see The BattalionA battalion is a military unit of around 500-1000 men usually consisting of between two and six companies and typically commanded by a Lieutenant Colonel. Several battalions are grouped to form a regiment or a brigade.The nomenclature varies by nationality and by branch of arms (e.g. some armies organize their infantry into battalions, but call battalion-sized cavalry, reconnaissance, or tank units a squadron or a regiment instead). There may even be subtle distinctions within a nation's branches of arms, such as a distinction between a tank battalion and an armored squadron, depending on how the unit's operational role is perceived to fit into the army's historical organization.
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National Library

national library, federal cultural agency responsible for collecting and preserving a country's published heritage

That eating disorder characterized by recurrent binge eating; recurrent willful vomiting and/or other recurrent inappropriate compensatory measures to prevent weight gain (e.g., laxative abuse, diuretic abuse, or overexercising); and an excessive influence of body weight or shape on self-evaluation.