parergron
n.— «When we apprehend the auditor’s mediating role, we have to reconnect the speaker’s main point (ergon) with what is beside the point (parergon), but the poem itself never confirms that our framing is accurate.» —“Browning’s ‘My Last Duchess’: Paragon and parergon” by Joseph A. Dupras Papers on Language and Literature Winter, 1996. (source: Double-Tongued Dictionary)