[1] : The Collaborative International Dictionary of English v.0.48

february \feb"ruary\, n. l. februarius, orig., the month of
   expiation, because on the fifteenth of this month the great
   feast of expiation and purification was held, fr. februa,
   pl., the roman festival or purification; akin to februare to
   purify, expiate.
   the second month in the year, said to have been introduced
   into the roman calendar by numa. in common years this month
   contains twenty-eight days; in the bissextile, or leap year,
   it has twenty-nine days.
   1913 webster

[2] : WordNet (r) 2.0

february
     n : the month following january and preceding march syn: feb
see also:
feb 

February >> F Words
February, definition of term: February
february_pag1.html

February 2 >> F Words
February 2, definition of term: February 2
february+2_pag1.html