muqran in Maltese means someone whose parter is cheating on him. An insult implying that the person is being cheated upon. Usually applied during heated arguments in the middle of the road, after one's garage exit is blocked by the opponent's car.

Origins:
In Italian there is a saying "con le Corne" - with the horns, which is slang for being cheated upon.
Horns in maltese are "Qrun"
Thus the word muqran is derived from "qrun" and refers to a (male) person. If referreing to a female person the term "muqrana" is used.

Someone people turn to when they're sad who makes them feel better.