| boffin | (noun) (British slang) a scientist or technician engaged in military research | - |
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| boffo | (adjective) resoundingly successful and popular | - |
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| riboflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: hepatoflavin, lactoflavin, ovoflavin, vitamin B2, vitamin G |
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| turbofan | (noun) a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust | Synonyms: fan-jet, fanjet, fanjet engine, turbofan engine, turbojet, turbojet engine |
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| (noun) an airplane propelled by a fanjet engine | Synonyms: fan-jet, fanjet, turbojet |