/pa rerr"gon/ , n. , pl. parerga /-geuh/ .
1. something that is an accessory to a main work or subject; embellishment.
2. work undertaken in addition to one's principal work.
[ 1595-1605; párergon, n. use of neut. of párergos beside the main subject, subordinate, equiv. to par- PAR- + érg ( on ) WORK + -os adj. suffix ]