Hilary term

Short definition from Wiktionary

Noun

1. 1
   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.
2. 2
   The second academic term of the universities of Oxford and Dublin, and other educational institutions, running from January to March; equivalent to Lent term at the University of Cambridge. The term was modelled after the legal term, but does not begin and end on the same dates.