Knickers is the correct terminology for a womens undergarments, the undergarment which is not a bra.
Other names are given for different styles of knickers as seen below.
The thong
The granny panties - which actually should be defined as granny knickers, but I'll let the people off seeing as most of these people are American.
bloomers
undies
panties
drawers
And many other ways.
Knickers can also be worn on one's head.
Also a good nickname for some named Nicole or Nicola.
by Suicidal-Bumblebee September 05, 2005