Old-fashioned. A rude composition employed in satire among the ancient Romans. Also a peculiar metre, consisting of three iambics and a syllable over, joined to three trochees, according to the following nursery metre:
The queen was in the par-lour ... The maids were in the garden ...
“The Fescennine and Saturnian were the same, for as they were called
Saturnian from their ancientness, when Saturn reigned in Italy, they
were called Fescennine from Fescennina [sic], where they were first practised.” —
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894