AnounCollocations from this entryWord sets 1Other dictionary examplesCorpus examplesAA'sa'sAA1, aa /eE?/ noun (plural A’s, a’s)1[uncountable and countable] the first letter of the English alphabet2[uncountable and countable] the sixth note in the musical scale of C major or the musical key based on this note3[countable] the highest mark that a student can get in an examination or for a piece of work: I got an A in French.getJulia got straight A’s (=all A’s) in high school.get → A level4an A student American English someone who regularly gets the best marks possible for their work in school or college5[uncountable] used to refer in a short way to one of two different things or people. You can call the second one B: A demands A£500, B offers A£100.demandoffer → plan A at plan1(5)6from A to B from one place to anotherget/go from A to BHiring a car was the best way to get from A to B.hirebewell7from A to Z describing, including, or knowing everything about a subject: the history of art from A to Z8A34, A40 etc the name of a road in Britain that is smaller than a motorway, but larger than a B-road → A-road9[uncountable] a common type of blood