noun, masculine/ˈmaitɾo/plural: maitros
man (or woman, lady, in the feminine), adult acquaintance or friend 20 years or older (typically older than 30, and typically older than the speaker) who receives respect due to being at work or being skilled at something
“La maitra de la pupusería nos contó el chambre.” — The woman from the pupusería told us the rumour.
From maestro.