In Google I tried for 'define:dude'. The link, http://www.answers.com/dude&r=67 gives the following meanings:Originally Posted by wml
1. Informal. An Easterner or city person who vacations on a ranch in the West.
2. Informal. A man who is very fancy or sharp in dress and demeanor.
A man; a fellow.
dudes Persons of either sex.
Hope it helps.