February means. . .

 It is the only month of the year that varies in its length -- it is only 29 days long during a "Leap Year" and remains 28 days otherwise.

Together with January, it was the last of the months added to the Roman calendar.

It is derived from the Latin word F-e-b-r-u-u-m (purification).

The Welsh call this month "y mis bach" which means little month

February was added to the Roman calendar in 713 B.C.E.

When Julius Caesar remade the calendar, the month was assigned 28 days except in Leap Years.  When it was given a variable length it had changed and diminished to as few as 23 days.