`Mingw' refers to the "Minimalist" GNU-Win32 project.

Mingw is a compiler system based on the GNU gcc/egcs projects
that compiles code to be run on Win32 (Windows) systems.
It provides C, C++ and Fortran compilers plus other related tools.

This package is a meta port that depends on other packages:
  mingw-binutils, mingw-bin-msvcrt, mingw-gcc

WWW: http://www.mingw.org/