[derefr]

"Windows Linux-ABI Subsystem" would have been crystal-clear.

[zorked]

Microsoft has a tradition with these confusing backwards names.

They used to have a product called Windows Services for UNIX [1] which was, you guessed it, UNIX Services for Windows: NFS, Telnet, cron, rsh, etc.

[1] https://en.wikipedia.org/wiki/Windows_Services_for_UNIX