In Colombia, it is a very cachaco term (bogotano), means amazing, plausible, of great importance or value, pleasant. Relevant.
In the colloquial language, one machera is a set or group of men ( adolescents or adults ) they are gathered together in a particular place. It is very common to hear a mother or grandmother, scolding the daughter or granddaughter: "You love to be where is the machera " (A group of males ).