(straight away postpositive) denoting a Notice of a supplied letter name (or maybe the audio it signifies) that's been decreased in pitch by one particular chromatic semitone: B flat Intelligent Vocabulary: related phrases and phrases Straight, even and level be (as) flat as being a pancake idiom clean up clean-Slash https://water19752.wikievia.com/9881358/indicators_on_apartment_for_rent_brno_you_should_know