Labor Day

from WordNet (r) 3.0 (2006)

Labor Day
    n 1: first Monday in September in the United States and Canada

from The Collaborative International Dictionary of English v.0.48

Labor Day \Labor Day\
   In most of the States and Territories of the United States, a
   day, usually the first Monday of September, set aside as a
   legal holiday, in honor of, or in the interest of, workingmen
   as a class. Also, a similar holiday in Canada, Australia,
   etc.
   [Webster 1913 Suppl.]