A prototype mobile suit.
NOTE: It is not an acronym, but in the newer series, Gundam SEED and Gundam SEED Destiny, it has been turned into an acronym quite definitions for the type(s) of Gundam O(perating)S(ystem)(s):
Fanboys love Gundam Wing
© 1999-2015 Urban Dictionary ®
Free Daily Email
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from email@example.com. We'll never spam you.