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first

 
 
/ˈfɜːst/ noun, pronoun

Definition

the first the first person, people, thing, or things: Hillary and Norgay were the first to climb Everest. I enjoyed his second novel more than the first.
be a first to be something that has never happened before: Man walking on the moon was a first in space history.
[C] the highest exam result that you can achieve at the end of a university course in the UK
(Definition of first nounpronoun from the Cambridge Learner's Dictionary © Cambridge University Press)

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