noun /jiə,jɜː,jiɹ/
a) The time it takes the Earth to complete one revolution of the Sun (between 365.24 and 365.26 days depending on the point of reference).
We moved to this town a year ago.
I quit smoking exactly one year ago.
Syn: twelvemonth, anomalistic year, Gaussian year, sidereal year, tropical year, calendar year, civil year, legal year
Wikipedia foundation.