Meaning of “January” - Learner’s Dictionary

January

noun [ C, U ] us uk /ˈdʒænjuəri/ written abbreviation Jan
He was born in January.January is so cold and dark.We're leaving for the States in January.She was born last January.Her birthday is January 12th.

A1 the first month of the year

(Definition of “January” from the Cambridge Learner’s Dictionary © Cambridge University Press)