Top Definition
An operating system prone to crashing - commonly referred by newbs as an Instable Computer - however, calling it such is incorrect.
Windows XP is an instable operating system. It tends to crash when documents remain unsaved for long periods of time.
by The Overmind July 06, 2004
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.