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1.
A kludge used to make the best software from *nix and make it work in insecure, unstable environments (windows), using a method proven to create instability (DLLs).
Cygwin can be used to instantly remove all stability from any formerly secure/stable *nix program.
by packetpusher July 24, 2009
22 7
 
2.
A set of Unix utilities ported to Windows.

See redhat.
Windows XP with cygwin is just as good as any Linux distro.
by w00tw00t April 05, 2003
15 22