1(of a person or their behaviour) unconventional and slightly strange:he noted her eccentric appearance
2 technical not placed centrally or not having its axis or other part placed centrally:a servo driving an eccentric cam (of a circle) not centred on the same point as another. (of an orbit) not circular.
1a person of unconventional and slightly strange views or behaviour:he’s seen as a local eccentric
2a disc or wheel mounted eccentrically on a revolving shaft in order to transform rotation into backward-and-forward motion, e.g. a cam in an internal-combustion engine.