Definition of hilary:
(n) :
A female given name from Latin.
(n) :
A male given name from Latin.
(n) :
A surname.
(n) :
(UK, Ireland, law, education) Ellipsis of Hilary term. [(law) The second term of the legal year, running from January to March or April, during which the upper courts of England and Wales, and Ireland, sit to hear cases.]