This informal meaning refers casually to a man, usually without emphasizing his identity.
That dude works at the coffee shop.
A tall dude was waiting by the entrance.
This use addresses someone informally, often a friend, regardless of whether a name is used.
Dude, you left your phone here.
Thanks for the help, dude.
This older meaning refers to a man considered overly fashionable, inexperienced, or unfamiliar with rural life.
The ranch workers joked about the visiting city dude.
The novel describes him as a well-dressed dude.
