It is the name of a French dish, typical in Le Mans. It is essentially desmechada pork with salt, pepper, spices and occasionally a touch of liquor. It's a hot pate. In Colombia and Venezuela we would call it a pig pisllo.
Rillette : Preparation of charcuterie made with pork, fat and lean, cut into pieces and cooked in lard until obtaining a dissociation of the fibers.