Definition of "Dunciad"

The poem, therefore, celebrating him, was properly and absolutely a Dunciad; which though now unhappily lost, yet is its nature sufficiently known by the infallible tokens aforesaid.

1794, Robert Anderson, The Works of the British Poets

Such damning fame as Dunciads only give / Could bid your lines beyond a morning live.

1809, Lord Byron, English Bards, and Scotch Reviewers