'Boxing Day' definitions:
Definition of 'Boxing Day'
From: WordNet
noun
First weekday after Christmas
Definition of 'Boxing day'
From: GCIDE
- Boxing day \Box"ing day`\ The first week day after Christmas, a legal holiday on which Christmas boxes are given to postmen, errand boys, employees, etc. The night of this day is boxing night. [Eng.] [Webster 1913 Suppl.]