Unrelated
Having No Ties, Uninvolved
noun, な adjective, の adjective
You learned 縁 means "edge," but remember how it means "relation" too? Well, if something has a nothing relation, it's probably unrelated.
無縁 describes having no ties with something else — you're utterly divorced from or uninvolved with that thing. For example, maybe you grew up in 宗教とは無縁な家庭 (a totally nonreligious household), or maybe you live お酒とは無縁な生活 (a life free of alcohol). Whatever the case, this thing is totally alien to you.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
この田舎道は、渋滞とは無縁です。
This country road has never seen a traffic jam.