noun, plural par·er·ga [pa-rur-guh] /pæˈrɜr gə/.
Examples from the Web for parergon
By 1595 the number of maps had increased to 119, including a Parergon or supplement of 12 maps illustrating ancient history.
Parergon, pa-rėr′gon, n. a by-work, any work subsidiary to another.
Sometimes this making or doing was their profession; sometimes it was a parergon carried on deliciously in leisure hours.The House by the River|A. P. Herbert
Ei d toutous ektrapomenos exelenchoimi, meizon an moi to parergon tou ergou genoito.On the Natural Faculties|Galen