A1 , a plural A's, a's
1 [uncountable and countable]SLA
the first letter of the English alphabet
2 [uncountable and countable]
the sixth note in the musical scale of C major or the musical key based on this note
the highest mark that a student can get in an examination or for a piece of work:
I got an A in French.
Julia got straight As (=all A's) in high school.
4 American English
someone who regularly gets the best marks possible for their work in school or college
used to refer in a short way to one of two different things or people. You can call the second one B:
A demands £500, B offers £100.
➔ plan Aat plan1 (5)
from one place to another
get/go from A to B
Hiring a car was the best way to get from A to B.
describing, including, or knowing everything about a subject:
the history of art from A to Z
the name of a road in Britain that is smaller than a motorway, but larger than a B-road ➔ A-road
a common type of blood