1) Developmental stage 
Pubarche refers to the first appearance of pubic hair in a child. Pubarche is one of the physical changes of puberty but should not be equated with it since it may occur independently of complete puberty. Pubarche usually results from rising levels of androgens from the adrenal glands or the testes but may also result from exposure of a child to a...
first appearance of pubic hair
Just as menarche means the time when menstruation begins, pubarche indicates when pubic hair begins. ... (12 Dec 1998) ... 
(pu-bahr´ke) the first appearance of pubic hair.
Type: Term Pronunciation: pyū-bar′kē Definitions: 1. Onset of puberty, particularly as manifested by the appearance of pubic hair.
Pubarche: Just as menarche means the time when menstruation begins, pubarche indicates when pubic hair begins.
pubarche Onset or the beginning of puberty, particularly as manifested by the appearance of pubic hair.