Lewis Short
pransor (noun M) : id.
* One that eats breakfast, that partakes of a meal in the forenoon, a guest (ante-class.): bonum anteponam prandium pransoribus,Plaut. Men. 2, 2, 2: cum jam manus pransores lavarent, Veran. ap. Macr. S. 3, 6, 14.
Charlton T. Lewis, Charles Short, A Latin Dictionary