Orphan, or bastard.
Commonly used as an insult in
Chile and Argentina.
May be pronounced wacho (casual speech) or washo (Chilean accent).
Similar terms in English would be: urchin, waif or perhaps street-rat.
Not to be confused with wacha, or wacho, conjugations of the mexican slang verb wachar (to look at / to watch).
Huérfano would be a more neutral word for
orphan.
The feminine is güacha.
¡Vo soi un güacho de mierda! ¡Lárgate de aquí, concha 'e tu madre! -- A Chilean insulting you.
¡
Sos un forro, güacho! ¡Andate de aquí;
la puta que te parió!
-- An Argentinian insulting you.