fera 'ô luni

Etymology
Literally “fair of the Monday”. The preposition, from combined with the definite article /, becomes dô in the Eastern Sicilian dialects, often pronounced rhotically  and even  'ô, by apheresis.

Noun

 * 1) A historical large, public market in the center of Catania, Sicily, originally held only on Mondays. It is now open on all working mornings.