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English definition of “flat”

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flat

adverb
 
 
/flæt/ (flatter, flattest)
B2 in a horizontal or level position on a surface: She spread the cloth flat across the kitchen table.Straight, even and level
flat out using all your energy or effort: We've all been working flat out to finish the project on time.Energetic and livelyEffort and expending energyTrying and making an effort
in 5 minutes/30 seconds, etc flat in exactly and only 5 minutes, 30 seconds, etc: He showered and got dressed in 10 minutes flat.Accurate and exact
(Definition of flat adverb from the Cambridge Learners Dictionary © Cambridge University Press)
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