From Longman Dictionary of Contemporary Englishfiddle with something phrasal verb1 CHANGE/MAKE something DIFFERENTto move part of a machine in order to make it work, without knowing exactly what you should do After fiddling with the tuning I finally got JFM.2 HOLDto move or touch something that does not belong to you, in an annoying way Don’t let him fiddle with my bag. → fiddle→ See Verb table
