It is sometimes used in American Spanish, in the Andean region; but it's Quechua and means "robust, vital young man." See huayno.
It is a Word in Quechua language meaning Young. It is the name of a summit in Peru. It is part of the Salcantay massif. It is better known as Huayna Picchu or Wayna Picchu (full name). In Quechua it means Young Mountain and is compared in importance to Macchu Picchu (Old or Ancient Mountain).