paˈrərˌgän noun
( plural parer·ga -_gə)
Etymology: Latin, from Greek, from par- para- (I) + ergon work — more at work
1. : something subordinate or accessory ; especially : an ornamental accessory or embellishment
2. : a subordinate activity or work : work undertaken in addition to one's main employment
a parergon , pondered and written during … moments of leisure — J.D.Wilson